CINXE.COM

<!DOCTYPE html><html data-wf-domain="www.cas.org" data-wf-page="657223094414605528acadbf" data-wf-site="650861f00f97fe8153979335" lang="en" data-wf-locale="ja"><head><meta charset="utf-8"/><title>CAS REGISTRY | CAS</title><link rel="alternate" hrefLang="x-default" href="https://www.cas.org/cas-data/cas-registry"/><link rel="alternate" hrefLang="en" href="https://www.cas.org/cas-data/cas-registry"/><link rel="alternate" hrefLang="pt-BR" href="https://www.cas.org/pt-br/cas-data/cas-registry"/><link rel="alternate" hrefLang="ko-KR" href="https://www.cas.org/ko/cas-data/cas-registry"/><link rel="alternate" hrefLang="es-ES" href="https://www.cas.org/es-es/cas-data/cas-registry"/><link rel="alternate" hrefLang="zh-CN" href="https://www.cas.org/zh-hans/cas-data/cas-registry"/><link rel="alternate" hrefLang="ja" href="https://www.cas.org/ja/cas-data/cas-registry"/><meta content="CAS REGISTRY®, the CAS substance collection, is the premier source relied upon by scientists and regulators worldwide for accurate information on chemical substances." name="description"/><meta content="CAS REGISTRY" property="og:title"/><meta content="CAS REGISTRY®, the CAS substance collection, is the premier source relied upon by scientists and regulators worldwide for accurate information on chemical substances." property="og:description"/><meta content="CAS REGISTRY" property="twitter:title"/><meta content="CAS REGISTRY®, the CAS substance collection, is the premier source relied upon by scientists and regulators worldwide for accurate information on chemical substances." property="twitter:description"/><meta property="og:type" content="website"/><meta content="summary_large_image" name="twitter:card"/><meta content="width=device-width, initial-scale=1" name="viewport"/><link href="https://cdn.prod.website-files.com/650861f00f97fe8153979335/css/cas-org.a6535ac52.min.css" rel="stylesheet" type="text/css"/><script type="text/javascript">!function(o,c){var n=c.documentElement,t=" w-mod-";n.className+=t+"js",("ontouchstart"in o||o.DocumentTouch&&c instanceof DocumentTouch)&&(n.className+=t+"touch")}(window,document);</script><link href="https://cdn.prod.website-files.com/650861f00f97fe8153979335/6585a20f2b9c762a8e082a87_cas-favicon.png" rel="shortcut icon" type="image/x-icon"/><link href="https://cdn.prod.website-files.com/650861f00f97fe8153979335/6585a218bfa3f8e706a9b92a_cas-webclip.png" rel="apple-touch-icon"/><link href="https://www.cas.org/ja/cas-data/cas-registry" rel="canonical"/><script> window.dataLayer = window.dataLayer ||[]; function gtag(){dataLayer.push(arguments);} gtag('consent','default',{ 'ad_storage':'denied', 'analytics_storage':'denied', 'ad_user_data':'denied', 'ad_personalization':'denied', 'personalization_storage':'denied', 'functionality_storage':'granted', 'security_storage':'granted', 'wait_for_update': 500 }); gtag("set", "ads_data_redaction", true); </script> <script src="https://cmp.osano.com/16BPzAUFV1UoQ26HU/a9d65c21-17eb-4eec-b081-a08a1ff580e7/osano.js"></script> <script async src="https://www.googletagmanager.com/gtag/js?id=G-0LKKGQYK33"></script> <script type="text/javascript" src="//cdn-4.convertexperiments.com/js/10047855-100411829.js"></script>  <script type="text/javascript" id="hs-script-loader" async defer src="//js.hs-scripts.com/47352454.js"></script>   <script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start': new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0], j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src= 'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f); })(window,document,'script','dataLayer','GTM-5RS86Q');</script>  <style>.box-1,.box-2{height:100%;text-align:center}*{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;-o-font-smoothing:antialiased}main ul li::marker{content:"\2014"}.osano-cm-drawer-toggle .osano-cm-label{color:#102a43}a{text-decoration:none}button{background-color:unset;padding:unset;text-align:inherit}section{position:relative}:where([data-container]){position:relative;width:100%;max-width:90rem;margin-right:auto;margin-left:auto;padding-top:var(--scale--scale-128px);padding-right:var(--scale--scale-32px);padding-bottom:var(--scale--scale-128px);padding-left:var(--scale--scale-32px)}.container:tiny{overflow:hidden}.em-dash-list{list-style:none;padding-left:0;margin-left:20px}.em-dash-list li{align-items:baseline}.em-dash-list li:before{content:"\2014";color:#41b6e6;display:inline-block;width:1em;margin-right:6px}.styled-table{border-collapse:collapse;margin:25px 0;font-size:1rem;font-family:sans-serif;min-width:400px;box-shadow:0 0 15px rgba(0,0,0,.15)}.styled-table thead tr{background-color:#41b6e6;color:#fff;text-align:left}.styled-table td,.styled-table th{padding:12px 15px}.styled-table tbody tr{border-bottom:1px solid #dcdcdc}.styled-table tbody tr:nth-of-type(2n){background-color:#fff}.styled-table tbody tr:last-of-type{border-bottom:2px solid #41b6e6}.styled-table tbody tr.active-row{font-weight:700;color:#41b6e6}.grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.box,.col{padding:20px}.box-1{background:#0032a0;color:#fff}.box-2{background:#ffc72c;color:#0032a0}@media (max-width:600px){.grid{grid-template-columns:1fr}}</style> <style media="print"> /* Hide header and footer */ .site-header, .site-footer_component { display: none !important; } /* Remove default margins */ @page { margin: 0; } body { margin: 1cm; } </style><script type="application/ld+json"> { "@context": "http://schema.org", "@type": "WebPage", "name": "CAS REGISTRY | CAS", "description": "CAS REGISTRY®, the CAS substance collection, is the premier source relied upon by scientists and regulators worldwide for accurate information on chemical substances.", "url": "https://www.cas.org/cas-data/cas-registry", "publisher": { "@type": "Organization", "name": "CAS", "url": "https://www.cas.org", "contactPoint": { "@type": "ContactPoint", "telephone": "+1-614-447-3731", "email": "help@cas.org", "faxnumber": "1-614-447-3751", "availableLanguage": "English", "contactType": "customer service" }, "address": { "@type": "PostalAddress", "streetAddress": "2540 Olentangy River Road", "addressLocality": "Columbus", "addressRegion": "OH", "postalCode": "43202", "addressCountry": "USA" } "sameAs": [ "https://www.facebook.com/CAS", "https://twitter.com/CASChemistry", "https://www.linkedin.com/company/cas", "https://www.youtube.com/user/ChemAbstractsService/featured" ] } } </script><script src="https://cdn.prod.website-files.com/650861f00f97fe8153979335%2F6544eda5f000985a163a8687%2F671a4cc4f8d90a0a94a07cb1%2Ffinsweetcomponentsconfig-1.0.1.js" type="module" async="" siteId="650861f00f97fe8153979335" finsweet="components"></script></head><body><div class="w-embed w-iframe">  <noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-5RS86Q" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript> </div><div class="page-wrapper"><header class="site-header"><div data-w-id="dff35351-dfb0-8d4f-486b-faee40785252" class="top-nav-wrapper"><div class="banner-component"><div>CAS STNext® Webinar Best practices for advanced structure searching in CAS STNext</div><a href="https://www.cas.org/resources/webinar/cas-stnext-r-webinar-best-practices-for-advanced-structure-searching-in-cas-stnext" class="banner__link w-inline-block"><div class="banner__text">Register now</div><div class="banner__icon w-embed"><svg width="18" height="18" viewBox="0 0 18 18" fill="none" xmlns="http://www.w3.org/2000/svg"> <path d="M10.8698 4.28285C10.5773 4.57535 10.5773 5.04785 10.8698 5.34035L13.7798 8.25035H2.40234C1.98984 8.25035 1.65234 8.58785 1.65234 9.00035C1.65234 9.41285 1.98984 9.75035 2.40234 9.75035H13.7873L10.8773 12.6603C10.5848 12.9528 10.5848 13.4254 10.8773 13.7179C11.1698 14.0104 11.6423 14.0104 11.9348 13.7179L16.1273 9.52535C16.4198 9.23285 16.4198 8.76035 16.1273 8.46785L11.9273 4.28285C11.6423 3.99035 11.1623 3.99035 10.8698 4.28285Z" fill="currentColor"/> </svg></div></a></div><div class="courtesy_nav-component"><div data-animation="default" data-collapse="small" data-duration="400" data-easing="ease" data-easing2="ease" role="banner" class="courtesy-navbar w-nav"><div class="courtesy-navbar_container"><div class="courtesy-navbar__wrapper"><div class="courtesy-navbar__search-component"><form action="/ja/search" typeof="WebSite" vocab="https://schema.org/" class="search w-form"><input class="search__input w-input" maxlength="256" name="query" typeof="SearchAction" placeholder="Search…" property="query-input" type="search" id="search" required=""/><input type="hidden" property="target" value="https://www.cas.org/search?query={search_term_string}"/><input type="submit" class="button button__search w-button" value="Search"/></form></div><div class="courtesy-navbar__language-wrapper"><nav role="navigation" class="courtesy-nav__menu w-nav-menu"><a href="/ja/training" class="courtesy-nav__link w-nav-link">Training</a><a href="/ja/contact" class="courtesy-nav__link w-nav-link">Contact</a><a href="/ja/cas-solutions-login" class="courtesy-nav__link w-nav-link">Login</a></nav><div class="menu-button-4 w-nav-button"><div class="icon-2 w-icon-nav-menu"></div></div><div data-hover="false" data-delay="0" class="language__dropdown w-dropdown"><div class="language__dropdown--toggle w-dropdown-toggle"><div class="language__dropdown--icon w-icon-dropdown-toggle"></div><div class="language__dropdown--prompt">Choose language</div></div><nav class="language__dropdown--locales w-dropdown-list"><div class="language__dropdown--locales-wrapper w-locales-list"><div role="list" class="language__dropdown--locales-list w-locales-items"><div role="listitem" class="language__dropdown--locale w-locales-item"><a hreflang="en" href="/cas-data/cas-registry" class="language__dropdown--locale-link">English</a></div><div role="listitem" class="language__dropdown--locale w-locales-item"><a hreflang="pt-BR" href="/pt-br/cas-data/cas-registry" class="language__dropdown--locale-link">Portuguese</a></div><div role="listitem" class="language__dropdown--locale w-locales-item"><a hreflang="ko-KR" href="/ko/cas-data/cas-registry" class="language__dropdown--locale-link">Korean</a></div><div role="listitem" class="language__dropdown--locale w-locales-item"><a hreflang="es-ES" href="/es-es/cas-data/cas-registry" class="language__dropdown--locale-link">Spanish</a></div><div role="listitem" class="language__dropdown--locale w-locales-item"><a hreflang="zh-CN" href="/zh-hans/cas-data/cas-registry" class="language__dropdown--locale-link">Chinese</a></div><div role="listitem" class="language__dropdown--locale w-locales-item"><a hreflang="ja" href="/ja/cas-data/cas-registry" aria-current="page" class="language__dropdown--locale-link w--current">Japanese</a></div></div></div></nav></div></div></div></div></div></div></div><div data-animation="default" class="site-navbar w-nav" data-easing2="ease" fs-scrolldisable-element="smart-nav" data-easing="ease" data-collapse="medium" data-w-id="215f21f3-d3c1-74ca-22fa-c34c35e3158b" role="banner" data-duration="400"><div class="site-nav__container"><a href="https://www.cas.org" class="navbar_logo-link w-nav-brand"><img src="https://cdn.prod.website-files.com/650861f00f97fe8153979335/65babbec1c38d54bcc033f7c_CAS_PREF_3C_RGB_POS.svg" loading="lazy" width="126" alt="CAS Logo" class="navbar_logo"/></a><nav role="navigation" class="site-navbar_menu is-page-height-tablet w-nav-menu"><div class="mobile-search_wrapper"><form action="/ja/search" class="mobile-search_component w-form"><input class="mobile-search_input w-input" maxlength="256" name="query" placeholder="" type="search" id="mobile-search" required=""/><input type="submit" class="mobile-search_button w-button" value="Search"/></form></div><div data-hover="false" data-delay="200" data-w-id="215f21f3-d3c1-74ca-22fa-c34c35e31596" class="navbar-main_menu-dropdown w-dropdown"><div class="navbar_dropdown-toggle w-dropdown-toggle"><div>Solutions</div><div class="dropdown-chevron w-embed"><svg width=" 100%" height=" 100%" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg"> <path fill-rule="evenodd" clip-rule="evenodd" d="M2.55806 6.29544C2.46043 6.19781 2.46043 6.03952 2.55806 5.94189L3.44195 5.058C3.53958 4.96037 3.69787 4.96037 3.7955 5.058L8.00001 9.26251L12.2045 5.058C12.3021 4.96037 12.4604 4.96037 12.5581 5.058L13.4419 5.94189C13.5396 6.03952 13.5396 6.19781 13.4419 6.29544L8.17678 11.5606C8.07915 11.6582 7.92086 11.6582 7.82323 11.5606L2.55806 6.29544Z" fill="currentColor"/> </svg></div></div><nav class="navbar-main_dropdown-list navbar-column-4-width w-dropdown-list"><div class="navbar-main_dropdown-content"><div id="w-node-da5a10a2-dd85-3827-8c9d-eb3bf354b8de-f9289f4b" class="navbar_dropdown-link-list"><div class="nav_dropdown-link-wrap"><a href="/ja/solutions/biofinder-discovery-platform" class="nav__dropdown-platform-link">CAS BioFinder Discovery Platform</a></div><div id="w-node-da5a10a2-dd85-3827-8c9d-eb3bf354b8e2-f9289f4b" class="nav_dropdown-link-wrap"><a href="/ja/solutions/cas-scifinder-discovery-platform" class="nav__dropdown-platform-link">CAS SciFinder Discovery Platform</a><div class="nav__link-list"><a href="/ja/solutions/cas-scifinder-discovery-platform/cas-scifinder" class="nav__dropdown-link w-inline-block"><div>CAS SciFinder</div></a><a href="/ja/solutions/cas-scifinder-discovery-platform/cas-formulus" class="nav__dropdown-link w-inline-block"><div>CAS Formulus</div></a><a href="/ja/solutions/cas-scifinder-discovery-platform/cas-analytical-methods" class="nav__dropdown-link w-inline-block"><div>CAS Analytical Methods</div></a></div></div></div><div id="w-node-da5a10a2-dd85-3827-8c9d-eb3bf354b8ef-f9289f4b" class="navbar_dropdown-link-list"><div class="nav_dropdown-link-wrap"><a href="/ja/solutions/stn-ip-protection-suite" class="nav__dropdown-platform-link">STN IP Protection Suite</a><div class="nav__link-list"><a href="/ja/solutions/stn-ip-protection-suite/stnext" class="nav__dropdown-link w-inline-block"><div>CAS STNext</div></a><a href="/ja/solutions/stn-ip-protection-suite/cas-scientific-patent-explorer" class="nav__dropdown-link w-inline-block"><div>CAS Scientific Patent Explorer</div></a><a href="/ja/solutions/stn-ip-protection-suite/patmon" class="nav__dropdown-link w-inline-block"><div>FIZ PatMon</div></a><a href="/ja/solutions/stn-ip-protection-suite/cas-search-guard" class="nav__dropdown-link w-inline-block"><div>CAS Search Guard</div></a></div></div></div><div id="w-node-da5a10a2-dd85-3827-8c9d-eb3bf354b900-f9289f4b" class="navbar_dropdown-link-list"><div class="nav_dropdown-link-wrap"><a href="/ja/solutions/cas-custom-services" class="nav__dropdown-platform-link">CAS Custom Services</a><div class="nav__link-list"><a href="/ja/solutions/cas-custom-services/ip-services" class="nav__dropdown-link w-inline-block"><div>CAS IP Services</div></a><a href="/ja/solutions/cas-registry-services" class="nav__dropdown-link w-inline-block"><div>CAS Registry Services</div></a></div></div></div><div id="w-node-da5a10a2-dd85-3827-8c9d-eb3bf354b90b-f9289f4b" class="navbar_dropdown-link-list"><div class="nav_dropdown-link-wrap"><a href="/ja/solutions/other-solutions" class="nav__dropdown-platform-link">Other CAS Solutions</a><div class="nav__link-list"><a href="/ja/solutions/other-solutions/cas-chemical-compliance-index" class="nav__dropdown-link w-inline-block"><div>CAS Chemical Compliance Index</div></a><a href="/ja/solutions/other-solutions/chemzent" class="nav__dropdown-link w-inline-block"><div>ChemZent</div></a><a href="/ja/solutions/other-solutions/cas-chemical-supplier-insights" class="nav__dropdown-link w-inline-block"><div>CAS Chemical Supplier Insights</div></a></div></div></div></div><a href="/ja/solutions" class="navbar_button-full-width w-inline-block"><div>View all solutions</div><div class="button-icon-small w-embed"><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--ic" width="100%" height="100%" preserveAspectRatio="xMidYMid meet" viewBox="0 0 24 24"><path fill="currentColor" d="M6 7c0 .55.45 1 1 1h7.59l-8.88 8.88a.996.996 0 1 0 1.41 1.41L16 9.41V17c0 .55.45 1 1 1s1-.45 1-1V7c0-.55-.45-1-1-1H7c-.55 0-1 .45-1 1"></path></svg></div></a></nav></div><div data-hover="false" data-delay="200" data-w-id="6ce5613a-a398-6459-54a8-c1335306637d" class="navbar-main_menu-dropdown w-dropdown"><div class="navbar_dropdown-toggle w-dropdown-toggle"><div>Featured industries</div><div class="dropdown-chevron w-embed"><svg width=" 100%" height=" 100%" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg"> <path fill-rule="evenodd" clip-rule="evenodd" d="M2.55806 6.29544C2.46043 6.19781 2.46043 6.03952 2.55806 5.94189L3.44195 5.058C3.53958 4.96037 3.69787 4.96037 3.7955 5.058L8.00001 9.26251L12.2045 5.058C12.3021 4.96037 12.4604 4.96037 12.5581 5.058L13.4419 5.94189C13.5396 6.03952 13.5396 6.19781 13.4419 6.29544L8.17678 11.5606C8.07915 11.6582 7.92086 11.6582 7.82323 11.5606L2.55806 6.29544Z" fill="currentColor"/> </svg></div></div><nav class="navbar-main_dropdown-list navbar-column-2_width navbar_industries w-dropdown-list"><div class="navbar-main_dropdown-content navbar-column-2"><div class="navbar_dropdown-link-list"><div id="w-node-_6ce5613a-a398-6459-54a8-c13353066388-f9289f4b" class="nav_dropdown-link-wrap"><div class="nav__link-list"><a href="/ja/industries/agriculture" class="nav__dropdown-link w-inline-block"><div>Agriculture</div></a><a href="/ja/industries/batteries" class="nav__dropdown-link w-inline-block"><div>Batteries</div></a><a href="/ja/industries/business-of-science" class="nav__dropdown-link w-inline-block"><div>Business of Science</div></a><a href="/ja/industries/coatings-and-inks" class="nav__dropdown-link w-inline-block"><div>Coatings and Inks</div></a></div></div></div><div class="navbar_dropdown-link-list"><div class="nav_dropdown-link-wrap"><div class="nav__link-list"><a href="/ja/industries/drug-discovery" class="nav__dropdown-link w-inline-block"><div>Drug Discovery</div></a><a href="/ja/industries/electronics-and-materials" class="nav__dropdown-link w-inline-block"><div>Electronics and Materials</div></a><a href="/ja/industries/plastics-and-polymers" class="nav__dropdown-link w-inline-block"><div>Plastics and Polymers</div></a><a href="/ja/industries/sustainability" class="nav__dropdown-link w-inline-block"><div>Sustainability</div></a></div></div></div></div><a href="/ja/industries/industries" class="navbar_button-full-width w-inline-block"><div>View all industries</div><div class="button-icon-small w-embed"><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--ic" width="100%" height="100%" preserveAspectRatio="xMidYMid meet" viewBox="0 0 24 24"><path fill="currentColor" d="M6 7c0 .55.45 1 1 1h7.59l-8.88 8.88a.996.996 0 1 0 1.41 1.41L16 9.41V17c0 .55.45 1 1 1s1-.45 1-1V7c0-.55-.45-1-1-1H7c-.55 0-1 .45-1 1"></path></svg></div></a></nav></div><div data-hover="false" data-delay="200" data-w-id="f8145756-c9d7-6b6d-891c-40f169ec6d18" class="navbar-main_menu-dropdown w-dropdown"><div class="navbar_dropdown-toggle w-dropdown-toggle"><div>CAS Data</div><div class="dropdown-chevron w-embed"><svg width=" 100%" height=" 100%" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg"> <path fill-rule="evenodd" clip-rule="evenodd" d="M2.55806 6.29544C2.46043 6.19781 2.46043 6.03952 2.55806 5.94189L3.44195 5.058C3.53958 4.96037 3.69787 4.96037 3.7955 5.058L8.00001 9.26251L12.2045 5.058C12.3021 4.96037 12.4604 4.96037 12.5581 5.058L13.4419 5.94189C13.5396 6.03952 13.5396 6.19781 13.4419 6.29544L8.17678 11.5606C8.07915 11.6582 7.92086 11.6582 7.82323 11.5606L2.55806 6.29544Z" fill="currentColor"/> </svg></div></div><nav class="navbar-main_dropdown-list navbar-column-2_width w-dropdown-list"><div class="navbar-main_dropdown-content navbar-column-2"><div class="navbar_dropdown-link-list"><div id="w-node-f8145756-c9d7-6b6d-891c-40f169ec6d20-f9289f4b" class="nav_dropdown-link-wrap"><div class="nav__link-list"><a href="/ja/cas-data/cas-registry" aria-current="page" class="nav__dropdown-link w-inline-block w--current"><div>CAS REGISTRY®</div></a><a href="/ja/cas-data/cas-reactions" class="nav__dropdown-link w-inline-block"><div>CAS Reactions</div></a><a href="/ja/cas-data/cas-references" class="nav__dropdown-link w-inline-block"><div>CAS References</div></a></div></div></div><div class="navbar_dropdown-link-list"><div class="nav_dropdown-link-wrap"><div class="nav__link-list"><a href="/ja/cas-data/cas-patents" class="nav__dropdown-link w-inline-block"><div>CAS Patents</div></a><a href="/ja/cas-data/cas-commercial-sources" class="nav__dropdown-link w-inline-block"><div>CAS Commercial Sources</div></a><a href="/ja/cas-data/cas-formulations" class="nav__dropdown-link w-inline-block"><div>CAS Formulations</div></a><a href="/ja/cas-data/life-sciences-data" class="nav__dropdown-link w-inline-block"><div>CAS Life Sciences</div></a></div></div></div></div><a href="/ja/cas-data" class="navbar_button-full-width w-inline-block"><div>View all CAS Data</div><div class="button-icon-small w-embed"><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--ic" width="100%" height="100%" preserveAspectRatio="xMidYMid meet" viewBox="0 0 24 24"><path fill="currentColor" d="M6 7c0 .55.45 1 1 1h7.59l-8.88 8.88a.996.996 0 1 0 1.41 1.41L16 9.41V17c0 .55.45 1 1 1s1-.45 1-1V7c0-.55-.45-1-1-1H7c-.55 0-1 .45-1 1"></path></svg></div></a></nav></div><div data-hover="false" data-delay="200" data-w-id="73ecd304-4e29-38f3-18bb-b8cd3eb6ac2b" class="navbar-main_menu-dropdown w-dropdown"><div class="navbar_dropdown-toggle w-dropdown-toggle"><div>Resources</div><div class="dropdown-chevron w-embed"><svg width=" 100%" height=" 100%" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg"> <path fill-rule="evenodd" clip-rule="evenodd" d="M2.55806 6.29544C2.46043 6.19781 2.46043 6.03952 2.55806 5.94189L3.44195 5.058C3.53958 4.96037 3.69787 4.96037 3.7955 5.058L8.00001 9.26251L12.2045 5.058C12.3021 4.96037 12.4604 4.96037 12.5581 5.058L13.4419 5.94189C13.5396 6.03952 13.5396 6.19781 13.4419 6.29544L8.17678 11.5606C8.07915 11.6582 7.92086 11.6582 7.82323 11.5606L2.55806 6.29544Z" fill="currentColor"/> </svg></div></div><nav class="navbar-main_dropdown-list navbar-column-2_width navbar_resources w-dropdown-list"><div class="navbar-main_dropdown-content navbar-column-2 navbar_resources"><div class="navbar_dropdown-link-list"><div id="w-node-_2f9fe6c6-c578-de26-c4e8-58c417e8eb54-f9289f4b" class="nav_dropdown-link-wrap"><div class="nav__link-list"><a href="/ja/resources/cas-insights" class="nav__dropdown-link w-inline-block"><div>CAS Insights</div></a><a href="/ja/cas-events" class="nav__dropdown-link w-inline-block"><div>Events</div></a><a href="/ja/cas-webinars" class="nav__dropdown-link w-inline-block"><div>Webinars</div></a><a href="/ja/resources/white-papers" class="nav__dropdown-link w-inline-block"><div>White papers</div></a></div></div></div><div class="navbar_dropdown-link-list"><div id="w-node-_2f9fe6c6-c578-de26-c4e8-58c417e8eb63-f9289f4b" class="nav_dropdown-link-wrap"><div class="nav__link-list"><a href="/ja/resources/case-studies" class="nav__dropdown-link w-inline-block"><div>Case Studies</div></a><a href="https://commonchemistry.cas.org/" class="nav__dropdown-link w-inline-block"><div>CAS Common Chemistry</div></a><a href="/ja/resources/chemical-safety-library" class="nav__dropdown-link w-inline-block"><div>CAS Chemical Safety Library</div></a><a href="https://cassi.cas.org/" class="nav__dropdown-link w-inline-block"><div>CAS Source Index (CASSI)</div></a></div></div></div></div><a href="/ja/resources" class="navbar_button-full-width w-inline-block"><div>View all resources</div><div class="button-icon-small w-embed"><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--ic" width="100%" height="100%" preserveAspectRatio="xMidYMid meet" viewBox="0 0 24 24"><path fill="currentColor" d="M6 7c0 .55.45 1 1 1h7.59l-8.88 8.88a.996.996 0 1 0 1.41 1.41L16 9.41V17c0 .55.45 1 1 1s1-.45 1-1V7c0-.55-.45-1-1-1H7c-.55 0-1 .45-1 1"></path></svg></div></a></nav></div><div data-hover="false" data-delay="200" data-w-id="7cad82f7-9dad-9ea8-65e5-8a505736f212" class="navbar-main_menu-dropdown w-dropdown"><div class="navbar_dropdown-toggle w-dropdown-toggle"><div>About</div><div class="dropdown-chevron w-embed"><svg width=" 100%" height=" 100%" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg"> <path fill-rule="evenodd" clip-rule="evenodd" d="M2.55806 6.29544C2.46043 6.19781 2.46043 6.03952 2.55806 5.94189L3.44195 5.058C3.53958 4.96037 3.69787 4.96037 3.7955 5.058L8.00001 9.26251L12.2045 5.058C12.3021 4.96037 12.4604 4.96037 12.5581 5.058L13.4419 5.94189C13.5396 6.03952 13.5396 6.19781 13.4419 6.29544L8.17678 11.5606C8.07915 11.6582 7.92086 11.6582 7.82323 11.5606L2.55806 6.29544Z" fill="currentColor"/> </svg></div></div><nav class="navbar-main_dropdown-list navbar-column-2_width navbar_about w-dropdown-list"><div class="navbar-main_dropdown-content navbar-column-2"><div class="navbar_dropdown-link-list"><div id="w-node-_257986f8-6154-22b2-c35d-1ceffe0d3de8-f9289f4b" class="nav_dropdown-link-wrap"><div class="nav__link-list"><a href="/ja/about-us" class="nav__dropdown-link w-inline-block"><div>About CAS</div></a><a href="/ja/about/cas-history" class="nav__dropdown-link w-inline-block"><div>CAS Story</div></a><a href="/ja/careers" class="nav__dropdown-link w-inline-block"><div>Careers</div></a><a href="/ja/about/futureleaders" class="nav__dropdown-link w-inline-block"><div>Future Leaders</div></a></div></div></div><div class="navbar_dropdown-link-list"><div id="w-node-_257986f8-6154-22b2-c35d-1ceffe0d3df4-f9289f4b" class="nav_dropdown-link-wrap"><div class="nav__link-list"><a href="/ja/cas-innovation-incubator" class="nav__dropdown-link w-inline-block"><div>CAS Innovation Incubator</div></a><a href="/ja/about/faqs" class="nav__dropdown-link w-inline-block"><div>FAQs</div></a><a href="/ja/press-releases" class="nav__dropdown-link w-inline-block"><div>Press Releases</div></a></div></div></div></div></nav></div><div class="mobile-utility-nav_wrapper"><a href="/ja/training" class="mobile__training-link">Training</a><a href="/ja/cas-solutions-login" class="mobile__training-link">Log in</a><a href="/ja/contact" class="mobile__training-link">Contact</a></div><div class="mobile-locales_wrapper w-locales-list"><div data-hover="false" data-delay="0" class="mobile-locales_dropdown w-dropdown"><div class="mobile-locales_dropdown-toggle w-dropdown-toggle"><div class="w-icon-dropdown-toggle"></div><div>Japanese</div></div><nav class="mobile-locales_dropdown-list w-dropdown-list"><div role="list" class="locales-list w-locales-items"><div role="listitem" class="locale_link w-locales-item"><a hreflang="en" href="/cas-data/cas-registry" class="locale_link">English</a></div><div role="listitem" class="locale_link w-locales-item"><a hreflang="pt-BR" href="/pt-br/cas-data/cas-registry" class="locale_link">Portuguese</a></div><div role="listitem" class="locale_link w-locales-item"><a hreflang="ko-KR" href="/ko/cas-data/cas-registry" class="locale_link">Korean</a></div><div role="listitem" class="locale_link w-locales-item"><a hreflang="es-ES" href="/es-es/cas-data/cas-registry" class="locale_link">Spanish</a></div><div role="listitem" class="locale_link w-locales-item"><a hreflang="zh-CN" href="/zh-hans/cas-data/cas-registry" class="locale_link">Chinese</a></div><div role="listitem" class="locale_link w-locales-item"><a hreflang="ja" href="/ja/cas-data/cas-registry" aria-current="page" class="locale_link w--current">Japanese</a></div></div></nav></div></div></nav><div class="navbar12_menu-button w-nav-button"><div class="menu-icon1"><div class="menu-icon1_line-top"></div><div class="menu-icon1_line-middle"><div class="menu-icon_line-middle-inner"></div></div><div class="menu-icon1_line-bottom"></div></div></div></div></div></header><main itemtype="https://schema.org/Organization" role="main" itemscope="" class="main-wrapper"><section class="promo-hero__wrapper"><div class="promo-hero__container"><div class="promo-hero__inner"><div id="w-node-_869f332c-648c-0d92-8b2f-48693bd2b5c4-28acadbf" class="promo-hero__body"><h1 id="w-node-_869f332c-648c-0d92-8b2f-48693bd2b5c5-28acadbf" class="promo-hero__title">CAS REGISTRY®</h1><p id="w-node-_869f332c-648c-0d92-8b2f-48693bd2b5c7-28acadbf" class="promo-hero__content">CASの化学物質コレクションであるCAS REGISTRYは、化学物質に関する正確な情報を提供し、世界中の科学者、メーカー、規制当局、データサイエンティストなどから信頼されている主要な情報源です。</p><a href="/ja/contact" class="button w-button">お問い合わせはこちらから</a></div></div></div></section><nav aria-label="Breadcrumb" class="section__breadcrumbs"><div class="container-breadcrumbs"><ol typeof="BreadcrumbList" vocab="https://schema.org/" role="list" class="breadcrumbs w-list-unstyled"><li typeof="ListItem" property="itemListElement" class="breadcrumbs__list-item"><a href="/ja" typeof="WebPage" property="item" class="breadcrumbs__item-link w-inline-block"><div property="name" class="breadcrumbs__list-item--text">Home</div></a><meta property="position" content="1"/><div class="breadcrumbs__separator w-embed"><svg width="32" height="32" viewBox="0 0 32 32" fill="none" xmlns="http://www.w3.org/2000/svg"> <path d="M20 8L11 23.5885" stroke="currentColor" stroke-width="1.5"/> </svg></div></li><li typeof="ListItem" property="itemListElement" class="breadcrumbs__list-item"><a href="/ja/cas-data" typeof="WebPage" property="item" class="breadcrumbs__item-link w-inline-block"><div property="name" class="breadcrumbs__list-item--text">CAS Data</div></a><meta property="position" content="2"/><div class="breadcrumbs__separator w-embed"><svg width="32" height="32" viewBox="0 0 32 32" fill="none" xmlns="http://www.w3.org/2000/svg"> <path d="M20 8L11 23.5885" stroke="currentColor" stroke-width="1.5"/> </svg></div></li><li typeof="ListItem" property="itemListElement" class="breadcrumbs__list-item"><div property="name" class="breadcrumbs__list-item--text">CAS Registry®</div><meta property="position" content="3"/></li></ol></div></nav><section class="section"><div class="container-2-2"><div class="grid-layout grid-layout--2-column"><div><img src="https://cdn.prod.website-files.com/650861f00f97fe8153979335/65afdecee777985ebbc748fc_cas-registry.webp" loading="lazy" alt=""/></div><div id="w-node-_73c16c7d-e4f0-062e-6d92-e0ec318bf2df-28acadbf" class="grid-layout__text"><h2>CAS 登録番号®とは何ですか。</h2><div class="w-richtext"><p>化合物は、分子式、化学構造、属性名、体系名、一般名および商標を含む多くの異なる方法で記述されます。そのため明確さが欠如すると、混乱や遅延、場合によっては安全上の懸念を引き起こすも考えられます。</p><p>CAS 登録番号は、特定の物質を明確に同定できる固有識別番号です。その物質に関する明確な意思疎通を可能にするほか、CASの科学者の支援のもと、それに関するすべての利用可能なデータや研究が紐づけられています。政府機関は、CAS 登録番号が一意であること、検証が容易で国際的に認められていることから、規制関連の申請における物質の識別に利用しています。</p></div></div></div></div></section><section class="section section-features"><div class="container-2-2"><div class="section__header"><h2 class="section__feature-title">特長</h2></div><div class="w-layout-grid grid-column-3"><div data-wf--card-feature-featured-section--variant="base" class="card__feature"><div class="card__feature--left-border"></div><div class="card__feature--content"><div class="card__feature-icon-wrapper"><img src="https://cdn.prod.website-files.com/650861f00f97fe8153979335/662fd86f65a8514c026cd8bc_CAS_Icons_Final_RGB_Patents.svg" loading="lazy" width="92" height="92" alt="" class="card__feature-icon"/></div><div class="rich-text_features w-richtext"><p>正確な化学物質名と構造、CAS 登録番号®の情報源です。</p></div></div></div><div data-wf--card-feature-featured-section--variant="base" class="card__feature"><div class="card__feature--left-border"></div><div class="card__feature--content"><div class="card__feature-icon-wrapper"><img src="https://cdn.prod.website-files.com/650861f00f97fe8153979335/662fd879a4fa47615abba4cc_CAS_Icons_Final_RGB_Substance.svg" loading="lazy" width="92" height="92" alt="" class="card__feature-icon"/></div><div class="rich-text_features w-richtext"><p>2億1900万件の合金、配位化合物、鉱物、混合物、ポリマー、そして塩など、1800年代前半から出版物に公表されてきた有機物</p></div></div></div><div data-wf--card-feature-featured-section--variant="base" class="card__feature"><div class="card__feature--left-border"></div><div class="card__feature--content"><div class="card__feature-icon-wrapper"><img src="https://cdn.prod.website-files.com/650861f00f97fe8153979335/662fd854521a8c00a67217f1_CAS_Icons_Final_RGB_Biosequences.svg" loading="lazy" width="92" height="92" alt="" class="card__feature-icon"/></div><div class="rich-text_features w-richtext"><p>7500万件近くのタンパク質と核酸配列</p></div></div></div><div data-wf--card-feature-featured-section--variant="base" class="card__feature"><div class="card__feature--left-border"></div><div class="card__feature--content"><div class="card__feature-icon-wrapper"><img src="https://cdn.prod.website-files.com/650861f00f97fe8153979335/662fd85dd5abc43d0c0f9fc4_CAS_Icons_Final_RGB_Data%20Standardization.svg" loading="lazy" width="92" height="92" alt="" class="card__feature-icon"/></div><div class="rich-text_features w-richtext"><p>80億点近くの実験と予測データデータポイントとスペクトル</p></div></div></div><div data-wf--card-feature-featured-section--variant="base" class="card__feature"><div class="card__feature--left-border"></div><div class="card__feature--content"><div class="card__feature-icon-wrapper"><img src="https://cdn.prod.website-files.com/650861f00f97fe8153979335/662fd873cf601b34f30e521e_CAS_Icons_Final_RGB_Proven%20Reliability.svg" loading="lazy" width="92" height="92" alt="" class="card__feature-icon"/></div><div class="rich-text_features w-richtext"><p>毎日何千もの新物質が追加される中から、最新の発見を常に把握</p></div></div></div><div data-wf--card-feature-featured-section--variant="base" class="card__feature"><div class="card__feature--left-border"></div><div class="card__feature--content"><div class="card__feature-icon-wrapper"><img src="https://cdn.prod.website-files.com/650861f00f97fe8153979335/662fd85a0af5c3573e1384ec_CAS_Icons_Final_RGB_Content.svg" loading="lazy" width="92" height="92" alt="" class="card__feature-icon"/></div><div class="rich-text_features w-richtext"><p>CAS コンテンツコレクション™の一部として、関連出版物や反応、化学物質サプライヤー、処方そしてその他情報などにもリンク</p></div></div></div></div></div></section><section aria-labelledby="faq-heading" itemscope="" itemtype="https://schema.org/FAQPage" class="section faq-section"><div class="container-2-2"><div class="faq-header-wrapper"><div class="faq-heading"><div class="faq-heading-subhead">よくある質問</div><h2 id="faq-heading" class="faq-heading-title">CAS REGISTRYとCAS 登録番号</h2></div><div class="faq-heading--cta-wrapper"><p>その他のご質問については、弊社まで直接お問い合わせください。</p><a href="/ja/contact" class="button w-button">お問い合わせはこちらから</a></div></div><div class="w-layout-grid faq-layout"><div class="faq-wrap"><div data-hover="false" data-delay="0" aria-labelledby="question1-heading" itemprop="mainEntity" itemscope="" itemtype="https://schema.org/Question" class="faq-item w-dropdown"><div class="faq-item__toggle w-dropdown-toggle"><div class="faq-item-title"><h3 itemprop="name" class="faq-title-content">CAS REGISTRYとは何ですか。</h3><div class="faq-item__icon-wrap"><div class="faq-item__icon w-embed"><svg width="100%" height="100%" viewBox="0 0 32 32" fill="none" xmlns="http://www.w3.org/2000/svg"> <path fill-rule="evenodd" clip-rule="evenodd" d="M16.5303 20.8839C16.2374 21.1768 15.7626 21.1768 15.4697 20.8839L7.82318 13.2374C7.53029 12.9445 7.53029 12.4697 7.82318 12.1768L8.17674 11.8232C8.46963 11.5303 8.9445 11.5303 9.2374 11.8232L16 18.5858L22.7626 11.8232C23.0555 11.5303 23.5303 11.5303 23.8232 11.8232L24.1768 12.1768C24.4697 12.4697 24.4697 12.9445 24.1768 13.2374L16.5303 20.8839Z" fill="currentColor"/> </svg></div></div></div></div><nav class="faq-item__content w-dropdown-list"><div itemscope="https://schema.org/Answer" itemprop="acceptedAnswer" class="faq-tab"><div itemprop="text" class="rich-text-block-2 w-richtext"><p>CAS REGISTRYは、化学物質の開示情報において最も権威あるデータコレクションです。</p><p>CAS REGISTRYでは、1957年から現在にいたるまで科学文献で特定された物質のほか、1900年代初期にまでさかのぼって追加した物質を網羅しています。</p><p>CAS REGISTRYでは毎日何千もの新しい物質について更新されています。</p></div></div></nav></div><div data-hover="false" data-delay="0" aria-labelledby="question1-heading" itemprop="mainEntity" itemscope="" itemtype="https://schema.org/Question" class="faq-item w-dropdown"><div class="faq-item__toggle w-dropdown-toggle"><div class="faq-item-title"><h3 itemprop="name" class="faq-title-content">CAS 登録番号 (CAS RN)とは何ですか。</h3><div class="faq-item__icon-wrap"><div class="faq-item__icon w-embed"><svg width="100%" height="100%" viewBox="0 0 32 32" fill="none" xmlns="http://www.w3.org/2000/svg"> <path fill-rule="evenodd" clip-rule="evenodd" d="M16.5303 20.8839C16.2374 21.1768 15.7626 21.1768 15.4697 20.8839L7.82318 13.2374C7.53029 12.9445 7.53029 12.4697 7.82318 12.1768L8.17674 11.8232C8.46963 11.5303 8.9445 11.5303 9.2374 11.8232L16 18.5858L22.7626 11.8232C23.0555 11.5303 23.5303 11.5303 23.8232 11.8232L24.1768 12.1768C24.4697 12.4697 24.4697 12.9445 24.1768 13.2374L16.5303 20.8839Z" fill="currentColor"/> </svg></div></div></div></div><nav class="faq-item__content w-dropdown-list"><div itemscope="https://schema.org/Answer" itemprop="acceptedAnswer" class="faq-tab"><div itemprop="text" class="rich-text-block-2 w-richtext"><p>各CAS 登録番号 (CAS RN)という識別子には、以下の特徴があります。</p><ul role="list"><li>固有の数字であらわした識別子である</li><li>１つの物質のみを指定しています</li><li>化学的な意味はありません</li><li>特定の化学物質に関する豊富な情報へのリンクです。</li></ul></div></div></nav></div><div data-hover="false" data-delay="0" aria-labelledby="question1-heading" itemprop="mainEntity" itemscope="" itemtype="https://schema.org/Question" class="faq-item w-dropdown"><div class="faq-item__toggle w-dropdown-toggle"><div class="faq-item-title"><h3 itemprop="name" class="faq-title-content">CAS 登録番号はどのような表記になっていますか。</h3><div class="faq-item__icon-wrap"><div class="faq-item__icon w-embed"><svg width="100%" height="100%" viewBox="0 0 32 32" fill="none" xmlns="http://www.w3.org/2000/svg"> <path fill-rule="evenodd" clip-rule="evenodd" d="M16.5303 20.8839C16.2374 21.1768 15.7626 21.1768 15.4697 20.8839L7.82318 13.2374C7.53029 12.9445 7.53029 12.4697 7.82318 12.1768L8.17674 11.8232C8.46963 11.5303 8.9445 11.5303 9.2374 11.8232L16 18.5858L22.7626 11.8232C23.0555 11.5303 23.5303 11.5303 23.8232 11.8232L24.1768 12.1768C24.4697 12.4697 24.4697 12.9445 24.1768 13.2374L16.5303 20.8839Z" fill="currentColor"/> </svg></div></div></div></div><nav class="faq-item__content w-dropdown-list"><div itemscope="https://schema.org/Answer" itemprop="acceptedAnswer" class="faq-tab"><div itemprop="text" class="rich-text-block-2 w-richtext"><p>CAS 登録番号は10桁までの数字で表す識別子で、ハイフンで3つの部分に区切られます。</p><p>右端の桁は検査数字で、数字全体の有効性と独自性を確認するために使用されます。</p><p>例えば、58-08-2は、カフェインのCAS 登録番号です。</p></div></div></nav></div><div data-hover="false" data-delay="0" aria-labelledby="question1-heading" itemprop="mainEntity" itemscope="" itemtype="https://schema.org/Question" class="faq-item w-dropdown"><div class="faq-item__toggle w-dropdown-toggle"><div class="faq-item-title"><h3 itemprop="name" class="faq-title-content">CASではどのように登録番号を割り当てるのでしょうか。</h3><div class="faq-item__icon-wrap"><div class="faq-item__icon w-embed"><svg width="100%" height="100%" viewBox="0 0 32 32" fill="none" xmlns="http://www.w3.org/2000/svg"> <path fill-rule="evenodd" clip-rule="evenodd" d="M16.5303 20.8839C16.2374 21.1768 15.7626 21.1768 15.4697 20.8839L7.82318 13.2374C7.53029 12.9445 7.53029 12.4697 7.82318 12.1768L8.17674 11.8232C8.46963 11.5303 8.9445 11.5303 9.2374 11.8232L16 18.5858L22.7626 11.8232C23.0555 11.5303 23.5303 11.5303 23.8232 11.8232L24.1768 12.1768C24.4697 12.4697 24.4697 12.9445 24.1768 13.2374L16.5303 20.8839Z" fill="currentColor"/> </svg></div></div></div></div><nav class="faq-item__content w-dropdown-list"><div itemscope="https://schema.org/Answer" itemprop="acceptedAnswer" class="faq-tab"><div itemprop="text" class="rich-text-block-2 w-richtext"><p>CAS 登録番号は、CAS REGISTRYデータベースを入力する際に、物質に割り当てられます。数字は、データベースに登録するために、CASの科学者が識別した、一意の新しい物質に対して順番に割り当てられます。</p></div></div></nav></div><div data-hover="false" data-delay="0" aria-labelledby="question1-heading" itemprop="mainEntity" itemscope="" itemtype="https://schema.org/Question" class="faq-item w-dropdown"><div class="faq-item__toggle w-dropdown-toggle"><div class="faq-item-title"><h3 itemprop="name" class="faq-title-content">このCAS REGISTRYには、どのような種類の化合物が登録されていますか。</h3><div class="faq-item__icon-wrap"><div class="faq-item__icon w-embed"><svg width="100%" height="100%" viewBox="0 0 32 32" fill="none" xmlns="http://www.w3.org/2000/svg"> <path fill-rule="evenodd" clip-rule="evenodd" d="M16.5303 20.8839C16.2374 21.1768 15.7626 21.1768 15.4697 20.8839L7.82318 13.2374C7.53029 12.9445 7.53029 12.4697 7.82318 12.1768L8.17674 11.8232C8.46963 11.5303 8.9445 11.5303 9.2374 11.8232L16 18.5858L22.7626 11.8232C23.0555 11.5303 23.5303 11.5303 23.8232 11.8232L24.1768 12.1768C24.4697 12.4697 24.4697 12.9445 24.1768 13.2374L16.5303 20.8839Z" fill="currentColor"/> </svg></div></div></div></div><nav class="faq-item__content w-dropdown-list"><div itemscope="https://schema.org/Answer" itemprop="acceptedAnswer" class="faq-tab"><div itemprop="text" class="rich-text-block-2 w-richtext"><p>CAS REGISTRYは、次のような物質の世界最大のコレクションをはじめとする、さまざまな物質を含んでいます。</p><ul role="list"><li>有機化合物と無機化合物。</li><li>金属および合金。</li><li>無機物</li><li>配位化合物と有機金属化合物</li><li>元素、同位体、核粒子。</li><li>タンパク質と核酸</li><li>ポリマー</li><li>非構造部材、および未知または可変組成、生体物質（UVCB）</li></ul></div></div></nav></div><div data-hover="false" data-delay="0" aria-labelledby="question1-heading" itemprop="mainEntity" itemscope="" itemtype="https://schema.org/Question" class="faq-item w-dropdown"><div class="faq-item__toggle w-dropdown-toggle"><div class="faq-item-title"><h3 itemprop="name" class="faq-title-content">CAS 登録番号が世界基準となったのはなぜですか。</h3><div class="faq-item__icon-wrap"><div class="faq-item__icon w-embed"><svg width="100%" height="100%" viewBox="0 0 32 32" fill="none" xmlns="http://www.w3.org/2000/svg"> <path fill-rule="evenodd" clip-rule="evenodd" d="M16.5303 20.8839C16.2374 21.1768 15.7626 21.1768 15.4697 20.8839L7.82318 13.2374C7.53029 12.9445 7.53029 12.4697 7.82318 12.1768L8.17674 11.8232C8.46963 11.5303 8.9445 11.5303 9.2374 11.8232L16 18.5858L22.7626 11.8232C23.0555 11.5303 23.5303 11.5303 23.8232 11.8232L24.1768 12.1768C24.4697 12.4697 24.4697 12.9445 24.1768 13.2374L16.5303 20.8839Z" fill="currentColor"/> </svg></div></div></div></div><nav class="faq-item__content w-dropdown-list"><div itemscope="https://schema.org/Answer" itemprop="acceptedAnswer" class="faq-tab"><div itemprop="text" class="rich-text-block-2 w-richtext"><p>CAS 登録番号は化学命名法のどのシステムにも依存していないため、次のことが可能になっています。</p><ul role="list"><li>物質を説明するために使われるさまざまな命名法間で、信頼できる共通の関連性を提供する</li><li>科学者や産業、そして規制機関で使われる化学物質の識別子用の国際的リソースとしての役割を果たす</li></ul></div></div></nav></div></div><div class="faq-wrap"><div data-hover="false" data-delay="0" aria-labelledby="question1-heading" itemprop="mainEntity" itemscope="" itemtype="https://schema.org/Question" class="faq-item w-dropdown"><div class="faq-item__toggle w-dropdown-toggle"><div class="faq-item-title"><h3 itemprop="name" class="faq-title-content">規制機関がCAS 登録番号に頼っているのはなぜですか。</h3><div class="faq-item__icon-wrap"><div class="faq-item__icon w-embed"><svg width="100%" height="100%" viewBox="0 0 32 32" fill="none" xmlns="http://www.w3.org/2000/svg"> <path fill-rule="evenodd" clip-rule="evenodd" d="M16.5303 20.8839C16.2374 21.1768 15.7626 21.1768 15.4697 20.8839L7.82318 13.2374C7.53029 12.9445 7.53029 12.4697 7.82318 12.1768L8.17674 11.8232C8.46963 11.5303 8.9445 11.5303 9.2374 11.8232L16 18.5858L22.7626 11.8232C23.0555 11.5303 23.5303 11.5303 23.8232 11.8232L24.1768 12.1768C24.4697 12.4697 24.4697 12.9445 24.1768 13.2374L16.5303 20.8839Z" fill="currentColor"/> </svg></div></div></div></div><nav class="faq-item__content w-dropdown-list"><div itemscope="https://schema.org/Answer" itemprop="acceptedAnswer" class="faq-tab"><div itemprop="text" class="rich-text-block-2 w-richtext"><p>化合物は、分子式、構造図、体系名、特許、商標などさまざまな形で表記されます。</p><p>それに対してCAS 登録番号は、その物質が他のいかなる形で呼ばれようとも一意であり、単一の物質特有のものになっています。</p><p>政府機関では、次の理由から、物質を把握するためにはCAS 登録番号が理想的であると考えています。</p><ul role="list"><li>一意であること</li><li>すばやく確実に認証できること</li><li>国際的に評価されていること</li></ul></div></div></nav></div><div data-hover="false" data-delay="0" aria-labelledby="question1-heading" itemprop="mainEntity" itemscope="" itemtype="https://schema.org/Question" class="faq-item w-dropdown"><div class="faq-item__toggle w-dropdown-toggle"><div class="faq-item-title"><h3 itemprop="name" class="faq-title-content">CAS 登録番号はどこで見つけられますか。</h3><div class="faq-item__icon-wrap"><div class="faq-item__icon w-embed"><svg width="100%" height="100%" viewBox="0 0 32 32" fill="none" xmlns="http://www.w3.org/2000/svg"> <path fill-rule="evenodd" clip-rule="evenodd" d="M16.5303 20.8839C16.2374 21.1768 15.7626 21.1768 15.4697 20.8839L7.82318 13.2374C7.53029 12.9445 7.53029 12.4697 7.82318 12.1768L8.17674 11.8232C8.46963 11.5303 8.9445 11.5303 9.2374 11.8232L16 18.5858L22.7626 11.8232C23.0555 11.5303 23.5303 11.5303 23.8232 11.8232L24.1768 12.1768C24.4697 12.4697 24.4697 12.9445 24.1768 13.2374L16.5303 20.8839Z" fill="currentColor"/> </svg></div></div></div></div><nav class="faq-item__content w-dropdown-list"><div itemscope="https://schema.org/Answer" itemprop="acceptedAnswer" class="faq-tab"><div itemprop="text" class="rich-text-block-2 w-richtext"><p>CAS 登録番号は、以下で検索できます。</p><p>In <a href="https://www.cas.org/solutions/cas-scifinder-discovery-platform/cas-scifinder-n">CAS SciFinder</a>® and <a href="https://www.cas.org/solutions/stn-ip-protection-suite/stnext">CAS STNext</a><sup>®</sup> databases, CAS publications, and other sources such as:</p><ul role="list"><li>Governmental regulatory agency commercial chemical inventories.</li><li><a href="https://www.cas.org/support/documentation/chemical-substances/info-exchange">Selected Elsevier databases.</a></li><li>Handbooks, guides, and technical reports.</li><li>Other printed reference works.</li><li>Chemical catalogs.</li></ul><p><a href="/ja/solutions/cas-scifinder-discovery-platform/cas-scifinder">CAS SciFinder®</a> および <a href="/ja/solutions/stn-ip-protection-suite/stnext">CAS STNext®</a> データベース、CAS出版物、以下のようなその他のリソース:</p><ul role="list"><li>政府規制機関の商業用化学品インベントリー</li><li><a href="https://www.cas.org/training/documentation/chemical-substances/info-exchange">エルゼビア（Elsevier）データベースの抜粋</a></li><li>ハンドブック、ガイドブック、技術報告書</li><li>その他印刷物の参考文献</li><li>化学品カタログ</li></ul><p>‍</p></div></div></nav></div><div data-hover="false" data-delay="0" aria-labelledby="question1-heading" itemprop="mainEntity" itemscope="" itemtype="https://schema.org/Question" class="faq-item w-dropdown"><div class="faq-item__toggle w-dropdown-toggle"><div class="faq-item-title"><h3 itemprop="name" class="faq-title-content">CAS REGISTRYの物質の中には関連のリフェレンスがまったくないものがありますが、これはなぜですか。このような物質についてさらに詳しく知るには、どうしたらよいですか</h3><div class="faq-item__icon-wrap"><div class="faq-item__icon w-embed"><svg width="100%" height="100%" viewBox="0 0 32 32" fill="none" xmlns="http://www.w3.org/2000/svg"> <path fill-rule="evenodd" clip-rule="evenodd" d="M16.5303 20.8839C16.2374 21.1768 15.7626 21.1768 15.4697 20.8839L7.82318 13.2374C7.53029 12.9445 7.53029 12.4697 7.82318 12.1768L8.17674 11.8232C8.46963 11.5303 8.9445 11.5303 9.2374 11.8232L16 18.5858L22.7626 11.8232C23.0555 11.5303 23.5303 11.5303 23.8232 11.8232L24.1768 12.1768C24.4697 12.4697 24.4697 12.9445 24.1768 13.2374L16.5303 20.8839Z" fill="currentColor"/> </svg></div></div></div></div><nav class="faq-item__content w-dropdown-list"><div itemscope="https://schema.org/Answer" itemprop="acceptedAnswer" class="faq-tab"><div itemprop="text" class="rich-text-block-2 w-richtext"><p>CAS REGISTRY内のレコードは、各種CASデータベース（CASリフェレンス、CAS反応、CAS Chemical Supplier Insights、CAS Markush）をはじめ、CAS SciFinderやSTNといった製品など他のデータベースのためにインデックスされた物質を表しています。文献または特許出版物以外をリソースとする物質は参考資料を含まない場合があります。CASは、登録ポリシー、化学ライブラリ、化学カタログ、ウェブソース、反応データベース、およびSTNに表示されていないデータコレクションに対応するために、これらの物質をインデックス化しています。REGISTRY内で文献や特許の参照がない物質について詳しく知るには、<a href="https://www.cas.org/support/documentation/chemical-substances/zerorefs">CAS STNextのSourceof Registrations (SR)（登録ソース）およびClass Identifier (CI)</a>（クラス識別子）フィールドを参照してください。</p></div></div></nav></div><div data-hover="false" data-delay="0" aria-labelledby="question1-heading" itemprop="mainEntity" itemscope="" itemtype="https://schema.org/Question" class="faq-item w-dropdown"><div class="faq-item__toggle w-dropdown-toggle"><div class="faq-item-title"><h3 itemprop="name" class="faq-title-content">CAS 登録番号の取得または申請の方法を教えてください。</h3><div class="faq-item__icon-wrap"><div class="faq-item__icon w-embed"><svg width="100%" height="100%" viewBox="0 0 32 32" fill="none" xmlns="http://www.w3.org/2000/svg"> <path fill-rule="evenodd" clip-rule="evenodd" d="M16.5303 20.8839C16.2374 21.1768 15.7626 21.1768 15.4697 20.8839L7.82318 13.2374C7.53029 12.9445 7.53029 12.4697 7.82318 12.1768L8.17674 11.8232C8.46963 11.5303 8.9445 11.5303 9.2374 11.8232L16 18.5858L22.7626 11.8232C23.0555 11.5303 23.5303 11.5303 23.8232 11.8232L24.1768 12.1768C24.4697 12.4697 24.4697 12.9445 24.1768 13.2374L16.5303 20.8839Z" fill="currentColor"/> </svg></div></div></div></div><nav class="faq-item__content w-dropdown-list"><div itemscope="https://schema.org/Answer" itemprop="acceptedAnswer" class="faq-tab"><div itemprop="text" class="rich-text-block-2 w-richtext"><p><a href="/ja/solutions/cas-registry-services/inventory-expert-services">CAS Inventory Expert Service</a>および<a href="/ja/solutions/cas-custom-services/nomenclature-and-registration">Nomenclature and Registration</a>サービスでは、CAS 登録番号の確認と割り当て、CAインデックス名の取得について、いくつかのオプションを提供しています。これらのサービスのご利用には手数料がかかりますのでご留意ください。</p></div></div></nav></div><div data-hover="false" data-delay="0" aria-labelledby="question1-heading" itemprop="mainEntity" itemscope="" itemtype="https://schema.org/Question" class="faq-item w-dropdown"><div class="faq-item__toggle w-dropdown-toggle"><div class="faq-item-title"><h3 itemprop="name" class="faq-title-content">登録番号はCASで利用することが重要なのはなぜですか。</h3><div class="faq-item__icon-wrap"><div class="faq-item__icon w-embed"><svg width="100%" height="100%" viewBox="0 0 32 32" fill="none" xmlns="http://www.w3.org/2000/svg"> <path fill-rule="evenodd" clip-rule="evenodd" d="M16.5303 20.8839C16.2374 21.1768 15.7626 21.1768 15.4697 20.8839L7.82318 13.2374C7.53029 12.9445 7.53029 12.4697 7.82318 12.1768L8.17674 11.8232C8.46963 11.5303 8.9445 11.5303 9.2374 11.8232L16 18.5858L22.7626 11.8232C23.0555 11.5303 23.5303 11.5303 23.8232 11.8232L24.1768 12.1768C24.4697 12.4697 24.4697 12.9445 24.1768 13.2374L16.5303 20.8839Z" fill="currentColor"/> </svg></div></div></div></div><nav class="faq-item__content w-dropdown-list"><div itemscope="https://schema.org/Answer" itemprop="acceptedAnswer" class="faq-tab"><div itemprop="text" class="rich-text-block-2 w-richtext"><p>印刷刊行物には古い情報が含まれている場合がありますが、CAS REGISTRYデータベースは毎日更新されているため、最新のCAS 登録番号情報をお探しの方にとっては最良のリソースとなっています。CASは、CAS 登録番号の供給元であり、最終の権限者です。他のリソースでは間違ったCAS 登録番号を化合物に関連付けている可能性があり、検索でその誤ったCAS 登録番号を使用することで、無関係な、あるいは不適切な情報の入手につながることがあります。</p></div></div></nav></div><div data-hover="false" data-delay="0" aria-labelledby="question1-heading" itemprop="mainEntity" itemscope="" itemtype="https://schema.org/Question" class="faq-item w-dropdown"><div class="faq-item__toggle w-dropdown-toggle"><div class="faq-item-title"><h3 itemprop="name" class="faq-title-content">CAS RN Verified Partner Programとは何ですか。</h3><div class="faq-item__icon-wrap"><div class="faq-item__icon w-embed"><svg width="100%" height="100%" viewBox="0 0 32 32" fill="none" xmlns="http://www.w3.org/2000/svg"> <path fill-rule="evenodd" clip-rule="evenodd" d="M16.5303 20.8839C16.2374 21.1768 15.7626 21.1768 15.4697 20.8839L7.82318 13.2374C7.53029 12.9445 7.53029 12.4697 7.82318 12.1768L8.17674 11.8232C8.46963 11.5303 8.9445 11.5303 9.2374 11.8232L16 18.5858L22.7626 11.8232C23.0555 11.5303 23.5303 11.5303 23.8232 11.8232L24.1768 12.1768C24.4697 12.4697 24.4697 12.9445 24.1768 13.2374L16.5303 20.8839Z" fill="currentColor"/> </svg></div></div></div></div><nav class="faq-item__content w-dropdown-list"><div itemscope="https://schema.org/Answer" itemprop="acceptedAnswer" class="faq-tab"><div itemprop="text" class="rich-text-block-2 w-richtext"><p>CAS Registry Numberライセンスは、組織がCAS Registry Numberを一般公開したり、公共または商業用に利用されているプラットフォーム機能をサポートするために使用する場合に必要です。詳細については、<a href="https://www.cas.org/support/documentation/chemical-substances/cas-rn-verified-partner-program">CAS Registry Number Verified Partner Program</a>を参照してください。</p><p>‍</p></div></div></nav></div></div></div></div></section><section class="section background_blue-grey"><div class="container-2-2"><div class="section__header"><h2>Latest from CAS Insights™</h2></div><div class="insights-cms-items_wrapper w-dyn-list"><div role="list" class="grid-column-3 w-dyn-items"><div role="listitem" class="insights-cms-items_list-item w-dyn-item"><div typeof="Article" vocab="" id="w-node-a20cb0dd-b9df-6a0b-dbc5-c6732757fde8-2757fde8" class="card"><img class="card__image" src="https://cdn.prod.website-files.com/650867962272bf8f15c1034b/67111194cdea08bafca6eb87_GettyImages-2024720440_CAS-Insights-Hero-Image.jpg" width="1024" height="576" alt="" sizes="(max-width: 1439px) 33vw, 480px" property="image" loading="lazy" srcset="https://cdn.prod.website-files.com/650867962272bf8f15c1034b/67111194cdea08bafca6eb87_GettyImages-2024720440_CAS-Insights-Hero-Image-p-500.jpg 500w, https://cdn.prod.website-files.com/650867962272bf8f15c1034b/67111194cdea08bafca6eb87_GettyImages-2024720440_CAS-Insights-Hero-Image-p-800.jpg 800w, https://cdn.prod.website-files.com/650867962272bf8f15c1034b/67111194cdea08bafca6eb87_GettyImages-2024720440_CAS-Insights-Hero-Image.jpg 1920w"/><div property="articleSection" fs-cmsfilter-field="resource" class="card__eyebrow">持続可能性</div><div class="card__body"><div class="card__webinar-block"></div><a itemprop="url" href="/ja/resources/cas-insights/solar-panel-recycling" class="card__title-link w-inline-block"><h2 property="headline" class="card__title">How to improve solar panel recycling</h2></a><div itemprop="description" class="card__summary-text-field">As solar panel usage increases, researchers are looking for new methods to tackle PV waste.</div><div class="card__date-meta-block"><time property=""datePublished"" datetime="">October 18, 2024</time><span>|</span><span>記事</span></div><div class="card__feature-solution--wrapper"></div></div><div class="button-wrapper button-wrapper-full-width"><a href="/ja/resources/cas-insights/solar-panel-recycling" class="button is-medium w-button">Read article</a></div></div></div><div role="listitem" class="insights-cms-items_list-item w-dyn-item"><div typeof="Article" vocab="" id="w-node-a20cb0dd-b9df-6a0b-dbc5-c6732757fde8-2757fde8" class="card"><img class="card__image" src="https://cdn.prod.website-files.com/650867962272bf8f15c1034b/66eb44baaec2d965abc8a429_GettyImages-1395711633_CAS-Insights-Hero-Image.jpg" width="1024" height="576" alt="" sizes="(max-width: 1439px) 33vw, 480px" property="image" loading="lazy" srcset="https://cdn.prod.website-files.com/650867962272bf8f15c1034b/66eb44baaec2d965abc8a429_GettyImages-1395711633_CAS-Insights-Hero-Image-p-500.jpg 500w, https://cdn.prod.website-files.com/650867962272bf8f15c1034b/66eb44baaec2d965abc8a429_GettyImages-1395711633_CAS-Insights-Hero-Image-p-800.jpg 800w, https://cdn.prod.website-files.com/650867962272bf8f15c1034b/66eb44baaec2d965abc8a429_GettyImages-1395711633_CAS-Insights-Hero-Image-p-1080.jpg 1080w, https://cdn.prod.website-files.com/650867962272bf8f15c1034b/66eb44baaec2d965abc8a429_GettyImages-1395711633_CAS-Insights-Hero-Image.jpg 1920w"/><div property="articleSection" fs-cmsfilter-field="resource" class="card__eyebrow">デジタル研究開発</div><div class="card__body"><div class="card__webinar-block"></div><a itemprop="url" href="/ja/resources/cas-insights/defining-the-path-to-tbk1-inhibition-with-qsar-modeling" class="card__title-link w-inline-block"><h2 property="headline" class="card__title">QSAR モデリングによる TBK1 阻害への道筋を定義する</h2></a><div itemprop="description" class="card__summary-text-field">TBK1 (TANK-binding kinase) が多くの疾患の病態生理学において重要な役割を果たしているにもかかわらず、なぜ FDA 承認された TBK1 阻害剤が市場に出ていないのでしょうか。</div><div class="card__date-meta-block"><time property=""datePublished"" datetime="">September 19, 2024</time><span>|</span><span>Insights Report</span></div><div class="card__feature-solution--wrapper"></div></div><div class="button-wrapper button-wrapper-full-width"><a href="/ja/resources/cas-insights/defining-the-path-to-tbk1-inhibition-with-qsar-modeling" class="button is-medium w-button">Read article</a></div></div></div><div role="listitem" class="insights-cms-items_list-item w-dyn-item"><div typeof="Article" vocab="" id="w-node-a20cb0dd-b9df-6a0b-dbc5-c6732757fde8-2757fde8" class="card"><img class="card__image" src="https://cdn.prod.website-files.com/650867962272bf8f15c1034b/66e061b35c6509d0524d47bb_GettyImages-683737105_CAS-Insights-Hero-Image.jpeg" width="1024" height="576" alt="" sizes="(max-width: 1439px) 33vw, 480px" property="image" loading="lazy" srcset="https://cdn.prod.website-files.com/650867962272bf8f15c1034b/66e061b35c6509d0524d47bb_GettyImages-683737105_CAS-Insights-Hero-Image-p-500.jpeg 500w, https://cdn.prod.website-files.com/650867962272bf8f15c1034b/66e061b35c6509d0524d47bb_GettyImages-683737105_CAS-Insights-Hero-Image-p-800.jpeg 800w, https://cdn.prod.website-files.com/650867962272bf8f15c1034b/66e061b35c6509d0524d47bb_GettyImages-683737105_CAS-Insights-Hero-Image-p-1080.jpeg 1080w, https://cdn.prod.website-files.com/650867962272bf8f15c1034b/66e061b35c6509d0524d47bb_GettyImages-683737105_CAS-Insights-Hero-Image-p-1600.jpeg 1600w, https://cdn.prod.website-files.com/650867962272bf8f15c1034b/66e061b35c6509d0524d47bb_GettyImages-683737105_CAS-Insights-Hero-Image.jpeg 1920w"/><div property="articleSection" fs-cmsfilter-field="resource" class="card__eyebrow">バイオテクノロジー</div><div class="card__body"><div class="card__webinar-block"></div><a itemprop="url" href="/ja/resources/cas-insights/better-safety-better-performance-how-sensors-change-the-game" class="card__title-link w-inline-block"><h2 property="headline" class="card__title">Better safety, better performance: How sensors change the game</h2></a><div itemprop="description" class="card__summary-text-field">Science and wearable tech go hand in hand to provide athletes with precise, personalized information to improve their performance.</div><div class="card__date-meta-block"><time property=""datePublished"" datetime="">September 13, 2024</time><span>|</span><span>記事</span></div><div class="card__feature-solution--wrapper"></div></div><div class="button-wrapper button-wrapper-full-width"><a href="/ja/resources/cas-insights/better-safety-better-performance-how-sensors-change-the-game" class="button is-medium w-button">Read article</a></div></div></div></div></div><div class="button-wrapper cas-insights-button-wrapper"><a href="/ja/resources/cas-insights" class="button is-medium w-button">View all CAS Insights</a></div></div></section></main><footer class="site-footer_component"><section class="section"><div class="container-2-2"><div class="grid-column-5"><div class="site-footer_link-list"><div class="margin-bottom margin-xsmall"><div class="site-footer_heading">Solutions</div></div><a href="/ja/solutions/biofinder-discovery-platform" class="site-footer_link">CAS BioFinder Discovery Platform™</a><a href="/ja/solutions/cas-scifinder-discovery-platform" class="site-footer_link">CAS SciFinder Discovery Platform™</a><a href="/ja/solutions/stn-ip-protection-suite" class="site-footer_link">STN IP Protection Suite™</a><a href="/ja/solutions/cas-custom-services" class="site-footer_link">CAS Custom Services</a><a href="/ja/solutions/other-solutions" class="site-footer_link">Other Solutions</a></div><div class="site-footer_link-list"><div class="margin-bottom margin-xsmall"><div class="site-footer_heading">Resources</div></div><a href="/ja/resources/cas-insights" class="site-footer_link">CAS Insights</a><a href="/ja/cas-events" class="site-footer_link">Events</a><a href="/ja/cas-webinars" class="site-footer_link">Webinars</a><a href="/ja/resources/white-papers" class="site-footer_link">White papers</a><a href="/ja/resources/case-studies" class="site-footer_link">Case studies</a><a href="https://commonchemistry.cas.org/" class="site-footer_link">CAS Common Chemistry</a><a href="https://cassi.cas.org/" class="site-footer_link">CAS Source Index (CASSI)</a></div><div class="site-footer_link-list"><div class="margin-bottom margin-xsmall"><div class="site-footer_heading">CAS Data</div></div><a href="/ja/cas-data/cas-registry" aria-current="page" class="site-footer_link w--current">CAS REGISTRY®</a><a href="/ja/cas-data/cas-reactions" class="site-footer_link">CAS Reactions</a><a href="/ja/cas-data/cas-references" class="site-footer_link">CAS References</a><a href="/ja/cas-data/cas-patents" class="site-footer_link">CAS Patents</a><a href="/ja/cas-data/cas-commercial-sources" class="site-footer_link">CAS Commercial Sources</a><a href="/ja/cas-data/cas-formulations" class="site-footer_link">CAS Formulations</a></div><div class="site-footer_link-list"><div class="margin-bottom margin-xsmall"><div class="site-footer_heading">About CAS</div></div><a href="/ja/about-us" class="site-footer_link">Our story</a><a href="/ja/careers" class="site-footer_link">Careers</a><a href="/ja/about/futureleaders" class="site-footer_link">CAS Future Leaders</a><a href="/ja/cas-innovation-incubator" class="site-footer_link">CAS Innovation Incubator</a><a href="/ja/press-releases" class="site-footer_link">Press Releases</a></div><div class="site-footer_right-wrapper"><div class="margin-bottom margin-xsmall"><div class="site-footer_heading">CAS Customer Center</div></div><div class="margin-bottom margin-xsmall is-small-mobile"><div class="text-size-small"><a href="mailto:help@cas.org" class="site-footer_link">help@cas.org</a></div><div class="text-size-small"><a href="tel:+1-800-753-4227" class="site-footer_link">800.753.4227 (North America)</a></div><div class="text-size-small"><a href="tel:+1-614-447-3731" class="site-footer_link">614.447.3731 (Worldwide)</a></div><div class="text-size-small"><a href="https://goo.gl/maps/y7K2gChT9TDv61SQ6" class="site-footer_link">2540 Olentangy River Road<br/>Columbus, Ohio 43202 U.S.A</a></div></div><a href="/ja/contact" class="button is-medium w-button">Contact us</a></div></div><div class="site-footer_divider"></div><div class="footer_bottom-wrapper"><div class="w-layout-grid footer_legal-list"><div id="w-node-_9015492a-b7f3-be43-cf28-dfe12f081ccc-2f081c75" class="footer10_credit-text">Copyright © 2025 American Chemical Society</div><a href="/ja/legal" class="site-footer_legal-link">Legal</a><a href="/ja/legal/privacy" class="site-footer_legal-link">Privacy</a><a href="https://solutions.cas.org/Manage-Preferences" class="site-footer_legal-link">Email preferences</a><a href="https://www.acs.org/accessibility-statement.html" class="site-footer_legal-link">Accessibility</a><a id="w-node-a2b696ea-1601-ffae-3b03-3766d928fd0d-2f081c75" class="site-footer_legal-link" href="#">Cookie preferences</a></div><div class="w-layout-grid footer_social-list"><a href="https://www.facebook.com/CAS" target="_blank" class="site-footer_social-link w-inline-block"><div class="icon-embed-xsmall w-embed"><svg width="100%" height="100%" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg"> <path d="M22 12.0611C22 6.50451 17.5229 2 12 2C6.47715 2 2 6.50451 2 12.0611C2 17.0828 5.65684 21.2452 10.4375 22V14.9694H7.89844V12.0611H10.4375V9.84452C10.4375 7.32296 11.9305 5.93012 14.2146 5.93012C15.3088 5.93012 16.4531 6.12663 16.4531 6.12663V8.60261H15.1922C13.95 8.60261 13.5625 9.37822 13.5625 10.1739V12.0611H16.3359L15.8926 14.9694H13.5625V22C18.3432 21.2452 22 17.083 22 12.0611Z" fill="CurrentColor"/> </svg></div></a><a href="https://www.twitter.com/CASChemistry" target="_blank" class="site-footer_social-link w-inline-block"><div class="icon-embed-xsmall w-embed"><svg width="100%" height="100%" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg"> <path d="M17.1761 4H19.9362L13.9061 10.7774L21 20H15.4456L11.0951 14.4066L6.11723 20H3.35544L9.80517 12.7508L3 4H8.69545L12.6279 9.11262L17.1761 4ZM16.2073 18.3754H17.7368L7.86441 5.53928H6.2232L16.2073 18.3754Z" fill="CurrentColor"/> </svg></div></a><a href="https://www.linkedin.com/company/cas" target="_blank" class="site-footer_social-link w-inline-block"><div class="icon-embed-xsmall w-embed"><svg width="100%" height="100%" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg"> <path fill-rule="evenodd" clip-rule="evenodd" d="M4.5 3C3.67157 3 3 3.67157 3 4.5V19.5C3 20.3284 3.67157 21 4.5 21H19.5C20.3284 21 21 20.3284 21 19.5V4.5C21 3.67157 20.3284 3 19.5 3H4.5ZM8.52076 7.00272C8.52639 7.95897 7.81061 8.54819 6.96123 8.54397C6.16107 8.53975 5.46357 7.90272 5.46779 7.00413C5.47201 6.15897 6.13998 5.47975 7.00764 5.49944C7.88795 5.51913 8.52639 6.1646 8.52076 7.00272ZM12.2797 9.76176H9.75971H9.7583V18.3216H12.4217V18.1219C12.4217 17.742 12.4214 17.362 12.4211 16.9819V16.9818V16.9816V16.9815V16.9812C12.4203 15.9674 12.4194 14.9532 12.4246 13.9397C12.426 13.6936 12.4372 13.4377 12.5005 13.2028C12.7381 12.3253 13.5271 11.7586 14.4074 11.8979C14.9727 11.9864 15.3467 12.3141 15.5042 12.8471C15.6013 13.1803 15.6449 13.5389 15.6491 13.8863C15.6605 14.9339 15.6589 15.9815 15.6573 17.0292V17.0294C15.6567 17.3992 15.6561 17.769 15.6561 18.1388V18.3202H18.328V18.1149C18.328 17.6629 18.3278 17.211 18.3275 16.7591V16.759V16.7588C18.327 15.6293 18.3264 14.5001 18.3294 13.3702C18.3308 12.8597 18.276 12.3563 18.1508 11.8627C17.9638 11.1286 17.5771 10.5211 16.9485 10.0824C16.5027 9.77019 16.0133 9.5691 15.4663 9.5466C15.404 9.54401 15.3412 9.54062 15.2781 9.53721L15.2781 9.53721L15.2781 9.53721C14.9984 9.52209 14.7141 9.50673 14.4467 9.56066C13.6817 9.71394 13.0096 10.0641 12.5019 10.6814C12.4429 10.7522 12.3852 10.8241 12.2991 10.9314L12.2991 10.9315L12.2797 10.9557V9.76176ZM5.68164 18.3244H8.33242V9.76733H5.68164V18.3244Z" fill="CurrentColor"/> </svg></div></a><a href="https://www.youtube.com/user/ChemAbstractsService/featured" target="_blank" class="site-footer_social-link w-inline-block"><div class="icon-embed-xsmall w-embed"><svg width="100%" height="100%" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg"> <path fill-rule="evenodd" clip-rule="evenodd" d="M20.5686 4.77345C21.5163 5.02692 22.2555 5.76903 22.5118 6.71673C23.1821 9.42042 23.1385 14.5321 22.5259 17.278C22.2724 18.2257 21.5303 18.965 20.5826 19.2213C17.9071 19.8831 5.92356 19.8015 3.40294 19.2213C2.45524 18.9678 1.71595 18.2257 1.45966 17.278C0.827391 14.7011 0.871044 9.25144 1.44558 6.73081C1.69905 5.78311 2.44116 5.04382 3.38886 4.78753C6.96561 4.0412 19.2956 4.282 20.5686 4.77345ZM9.86682 8.70227L15.6122 11.9974L9.86682 15.2925V8.70227Z" fill="CurrentColor"/> </svg></div></a></div></div></div></section></footer></div><script src="https://d3e54v103j8qbb.cloudfront.net/js/jquery-3.5.1.min.dc5e7f18c8.js?site=650861f00f97fe8153979335" type="text/javascript" integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script><script src="https://cdn.prod.website-files.com/650861f00f97fe8153979335/js/cas-org.196e15fb.24a0141b2aa72f7b.js" type="text/javascript"></script><script>var UTMTracker=function(){function t(t){void 0===t&&(t={}),this.cookieExpDays=t.cookieExpDays||90,this.cookieName="urlParameters",this.requiredParams=["utm_source","utm_medium","utm_campaign"],this.optionalParams=["utm_term","utm_content"],this.adPlatformParams=["gclid","msclkid","fbclid"]}return t.prototype.init=function(){"undefined"!=typeof Osano&&Osano.cm.getConsent("analytics")?(this.saveParamsCookie(),this.pushToForms()):"undefined"!=typeof Osano&&document.addEventListener("osano-cm-consent-changed",function(t){!0===t.detail.analytics&&(this.saveParamsCookie(),this.pushToForms())}.bind(this))},t.prototype.getCookieExpiration=function(){var t=new Date;return t.setDate(t.getDate()+this.cookieExpDays),t.toUTCString()},t.prototype.sanitizeValue=function(t){try{return decodeURIComponent(t).replace(/[<>{}]/g,"").substring(0,255)}catch(t){return console.error("Error sanitizing value:",t),""}},t.prototype.parseURLParams=function(){var t={};try{var e=new URLSearchParams(window.location.search);this.requiredParams.forEach(function(r){var a=e.get(r);a&&(t[r]=this.sanitizeValue(a))}.bind(this)),this.optionalParams.forEach(function(r){var a=e.get(r);a&&(t[r]=this.sanitizeValue(a))}.bind(this)),this.adPlatformParams.forEach(function(r){var a=e.get(r);a&&(t[r]=this.sanitizeValue(a),t.lta=this.getAttributionSource(r))}.bind(this)),!t.lta&&document.referrer&&(t.lta=new URL(document.referrer).hostname)}catch(t){console.error("Error parsing URL parameters:",t)}return t},t.prototype.getAttributionSource=function(t){return{gclid:"Google Ads",msclkid:"Bing Ads",fbclid:"Facebook Ads"}[t]||"Unknown"},t.prototype.saveParamsCookie=function(){var t=this.parseURLParams();if(Object.keys(t).length>0)try{var e=JSON.stringify(t);document.cookie=this.cookieName+"="+e+"; expires="+this.getCookieExpiration()+"; path=/; SameSite=Strict"}catch(t){console.error("Error saving cookie:",t)}},t.prototype.getSavedParams=function(){try{var t=document.cookie.split("; ").find(function(t){return t.startsWith(this.cookieName+"=")}.bind(this));if(t){var e=t.split("=")[1];return JSON.parse(e)}}catch(t){console.error("Error reading cookie:",t)}return null},t.prototype.pushToForms=function(){var t=this.getSavedParams();if(t){var e={utm_source:"hiddenCampaignsource",utm_medium:"hiddenCampaignmedium",utm_campaign:"hiddenCampaignname",utm_content:"hiddenCampaigncontent",utm_term:"utm_term",lta:"last_touch_attribution"};Object.entries(e).forEach(function(e){var r=e[0],a=e[1];if(t[r]){document.querySelectorAll("."+a+' input[type="text"]').forEach(function(e){e.value=t[r]})}})}},t}(); document.addEventListener("DOMContentLoaded",function(){(new UTMTracker({cookieExpDays:90})).init()}); </script><script type="text/javascript" src="/_Incapsula_Resource?SWJIYLWA=719d34d31c8e3a6e6fffd425f7e032f3&ns=1&cb=1454260970" async></script></body></html>