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class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Numero CAS</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Vai a una voce in un'altra lingua. Disponibile in 60 lingue" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-60" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">60 lingue</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/CAS-registernommer" title="CAS-registernommer - afrikaans" lang="af" hreflang="af" data-title="CAS-registernommer" data-language-autonym="Afrikaans" data-language-local-name="afrikaans" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%B1%D9%82%D9%85_%D8%A7%D9%84%D8%AA%D8%B3%D8%AC%D9%8A%D9%84_CAS" title="رقم التسجيل CAS - arabo" lang="ar" hreflang="ar" data-title="رقم التسجيل CAS" data-language-autonym="العربية" data-language-local-name="arabo" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/N%C3%BAmberu_de_rexistru_CAS" title="Númberu de rexistru CAS - asturiano" lang="ast" hreflang="ast" data-title="Númberu de rexistru CAS" data-language-autonym="Asturianu" data-language-local-name="asturiano" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/CAS-da_qeydiyyat_n%C3%B6mr%C9%99si" title="CAS-da qeydiyyat nömrəsi - azerbaigiano" lang="az" hreflang="az" data-title="CAS-da qeydiyyat nömrəsi" data-language-autonym="Azərbaycanca" data-language-local-name="azerbaigiano" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/CAS_%D1%80%D0%B5%D0%B3%D0%B8%D1%81%D1%82%D1%80%D0%B0%D1%86%D0%B8%D0%BE%D0%BD%D0%B5%D0%BD_%D0%BD%D0%BE%D0%BC%D0%B5%D1%80" title="CAS регистрационен номер - bulgaro" lang="bg" hreflang="bg" data-title="CAS регистрационен номер" data-language-autonym="Български" data-language-local-name="bulgaro" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%95%E0%A7%8D%E0%A6%AF%E0%A6%BE%E0%A6%B8_%E0%A6%A8%E0%A6%BF%E0%A6%AC%E0%A6%A8%E0%A7%8D%E0%A6%A7%E0%A6%A8_%E0%A6%A8%E0%A6%AE%E0%A7%8D%E0%A6%AC%E0%A6%B0" title="ক্যাস নিবন্ধন নম্বর - bengalese" lang="bn" hreflang="bn" data-title="ক্যাস নিবন্ধন নম্বর" data-language-autonym="বাংলা" data-language-local-name="bengalese" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/Niverenn_CAS" title="Niverenn CAS - bretone" lang="br" hreflang="br" data-title="Niverenn CAS" data-language-autonym="Brezhoneg" data-language-local-name="bretone" class="interlanguage-link-target"><span>Brezhoneg</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/CAS_registarski_broj" title="CAS registarski broj - bosniaco" lang="bs" hreflang="bs" data-title="CAS registarski broj" data-language-autonym="Bosanski" data-language-local-name="bosniaco" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/N%C3%BAmero_CAS" title="Número CAS - catalano" lang="ca" hreflang="ca" data-title="Número CAS" data-language-autonym="Català" data-language-local-name="catalano" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Registra%C4%8Dn%C3%AD_%C4%8D%C3%ADslo_CAS" title="Registrační číslo CAS - ceco" lang="cs" hreflang="cs" data-title="Registrační číslo CAS" data-language-autonym="Čeština" data-language-local-name="ceco" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/CAS-nummer" title="CAS-nummer - danese" lang="da" hreflang="da" data-title="CAS-nummer" data-language-autonym="Dansk" data-language-local-name="danese" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/CAS-Nummer" title="CAS-Nummer - tedesco" lang="de" hreflang="de" data-title="CAS-Nummer" data-language-autonym="Deutsch" data-language-local-name="tedesco" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%91%CF%81%CE%B9%CE%B8%CE%BC%CF%8C%CF%82_CAS" title="Αριθμός CAS - greco" lang="el" hreflang="el" data-title="Αριθμός CAS" data-language-autonym="Ελληνικά" data-language-local-name="greco" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/CAS_Registry_Number" title="CAS Registry Number - inglese" lang="en" hreflang="en" data-title="CAS Registry Number" data-language-autonym="English" data-language-local-name="inglese" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/CAS-numero" title="CAS-numero - esperanto" lang="eo" hreflang="eo" data-title="CAS-numero" data-language-autonym="Esperanto" data-language-local-name="esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/N%C3%BAmero_de_registro_CAS" title="Número de registro CAS - spagnolo" lang="es" hreflang="es" data-title="Número de registro CAS" data-language-autonym="Español" data-language-local-name="spagnolo" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/CAS-i_registreerimisnumber" title="CAS-i registreerimisnumber - estone" lang="et" hreflang="et" data-title="CAS-i registreerimisnumber" data-language-autonym="Eesti" data-language-local-name="estone" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/CAS_erregistro_zenbaki" title="CAS erregistro zenbaki - basco" lang="eu" hreflang="eu" data-title="CAS erregistro zenbaki" data-language-autonym="Euskara" data-language-local-name="basco" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%B4%D9%85%D8%A7%D8%B1%D9%87_%D8%AB%D8%A8%D8%AA_%D8%B3%DB%8C%E2%80%8C%D8%A7%DB%8C%E2%80%8C%D8%A7%D8%B3" title="شماره ثبت سی‌ای‌اس - persiano" lang="fa" hreflang="fa" data-title="شماره ثبت سی‌ای‌اس" data-language-autonym="فارسی" data-language-local-name="persiano" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/CAS-numero" title="CAS-numero - finlandese" lang="fi" hreflang="fi" data-title="CAS-numero" data-language-autonym="Suomi" data-language-local-name="finlandese" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Num%C3%A9ro_CAS" title="Numéro CAS - francese" lang="fr" hreflang="fr" data-title="Numéro CAS" data-language-autonym="Français" data-language-local-name="francese" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-frr mw-list-item"><a href="https://frr.wikipedia.org/wiki/CAS-Numer" title="CAS-Numer - frisone settentrionale" lang="frr" hreflang="frr" data-title="CAS-Numer" data-language-autonym="Nordfriisk" data-language-local-name="frisone settentrionale" class="interlanguage-link-target"><span>Nordfriisk</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/N%C3%BAmero_CAS" title="Número CAS - galiziano" lang="gl" hreflang="gl" data-title="Número CAS" data-language-autonym="Galego" data-language-local-name="galiziano" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%9E%D7%A1%D7%A4%D7%A8_CAS" title="מספר CAS - ebraico" lang="he" hreflang="he" data-title="מספר CAS" data-language-autonym="עברית" data-language-local-name="ebraico" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/CAS_%E0%A4%B8%E0%A4%82%E0%A4%96%E0%A5%8D%E0%A4%AF%E0%A4%BE" title="CAS संख्या - hindi" lang="hi" hreflang="hi" data-title="CAS संख्या" data-language-autonym="हिन्दी" data-language-local-name="hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/CAS_registarski_broj" title="CAS registarski broj - croato" lang="hr" hreflang="hr" data-title="CAS registarski broj" data-language-autonym="Hrvatski" data-language-local-name="croato" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/CAS-sz%C3%A1m" title="CAS-szám - ungherese" lang="hu" hreflang="hu" data-title="CAS-szám" data-language-autonym="Magyar" data-language-local-name="ungherese" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Nomor_CAS" title="Nomor CAS - indonesiano" lang="id" hreflang="id" data-title="Nomor CAS" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonesiano" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/CAS-n%C3%BAmer" title="CAS-númer - islandese" lang="is" hreflang="is" data-title="CAS-númer" data-language-autonym="Íslenska" data-language-local-name="islandese" class="interlanguage-link-target"><span>Íslenska</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/CAS%E7%99%BB%E9%8C%B2%E7%95%AA%E5%8F%B7" title="CAS登録番号 - giapponese" lang="ja" hreflang="ja" data-title="CAS登録番号" data-language-autonym="日本語" data-language-local-name="giapponese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/CAS_%EB%93%B1%EB%A1%9D%EB%B2%88%ED%98%B8" title="CAS 등록번호 - coreano" lang="ko" hreflang="ko" data-title="CAS 등록번호" data-language-autonym="한국어" data-language-local-name="coreano" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-lmo mw-list-item"><a href="https://lmo.wikipedia.org/wiki/N%C3%BCmer_CAS" title="Nümer CAS - lombardo" lang="lmo" hreflang="lmo" data-title="Nümer CAS" data-language-autonym="Lombard" data-language-local-name="lombardo" class="interlanguage-link-target"><span>Lombard</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/CAS_registracijos_numeris" title="CAS registracijos numeris - lituano" lang="lt" hreflang="lt" data-title="CAS registracijos numeris" data-language-autonym="Lietuvių" data-language-local-name="lituano" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/CAS-%D0%B1%D1%80%D0%BE%D1%98" title="CAS-број - macedone" lang="mk" hreflang="mk" data-title="CAS-број" data-language-autonym="Македонски" data-language-local-name="macedone" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%B8%E0%B4%BF.%E0%B4%8E.%E0%B4%8E%E0%B4%B8%E0%B5%8D_%E0%B4%B1%E0%B4%9C%E0%B4%BF%E0%B4%B8%E0%B5%8D%E0%B4%9F%E0%B5%8D%E0%B4%B0%E0%B4%BF_%E0%B4%A8%E0%B4%AE%E0%B5%8D%E0%B4%AA%E0%B5%BC" title="സി.എ.എസ് റജിസ്ട്രി നമ്പർ - malayalam" lang="ml" hreflang="ml" data-title="സി.എ.എസ് റജിസ്ട്രി നമ്പർ" data-language-autonym="മലയാളം" data-language-local-name="malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-ms badge-Q70893996 mw-list-item" title=""><a href="https://ms.wikipedia.org/wiki/Nombor_Pendaftaran_CAS" title="Nombor Pendaftaran CAS - malese" lang="ms" hreflang="ms" data-title="Nombor Pendaftaran CAS" data-language-autonym="Bahasa Melayu" data-language-local-name="malese" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-nds mw-list-item"><a href="https://nds.wikipedia.org/wiki/CAS-Tall" title="CAS-Tall - basso tedesco" lang="nds" hreflang="nds" data-title="CAS-Tall" data-language-autonym="Plattdüütsch" data-language-local-name="basso tedesco" class="interlanguage-link-target"><span>Plattdüütsch</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/CAS-nummer" title="CAS-nummer - olandese" lang="nl" hreflang="nl" data-title="CAS-nummer" data-language-autonym="Nederlands" data-language-local-name="olandese" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/CAS-nummer" title="CAS-nummer - norvegese nynorsk" lang="nn" hreflang="nn" data-title="CAS-nummer" data-language-autonym="Norsk nynorsk" data-language-local-name="norvegese nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/CAS-nummer" title="CAS-nummer - norvegese bokmål" lang="nb" hreflang="nb" data-title="CAS-nummer" data-language-autonym="Norsk bokmål" data-language-local-name="norvegese bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/Num%C3%A8ro_CAS" title="Numèro CAS - occitano" lang="oc" hreflang="oc" data-title="Numèro CAS" data-language-autonym="Occitan" data-language-local-name="occitano" class="interlanguage-link-target"><span>Occitan</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Numer_CAS" title="Numer CAS - polacco" lang="pl" hreflang="pl" data-title="Numer CAS" data-language-autonym="Polski" data-language-local-name="polacco" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/N%C3%BAmero_CAS" title="Número CAS - portoghese" lang="pt" hreflang="pt" data-title="Número CAS" data-language-autonym="Português" data-language-local-name="portoghese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Num%C4%83r_registru_CAS" title="Număr registru CAS - rumeno" lang="ro" hreflang="ro" data-title="Număr registru CAS" data-language-autonym="Română" data-language-local-name="rumeno" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%A0%D0%B5%D0%B3%D0%B8%D1%81%D1%82%D1%80%D0%B0%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D1%8B%D0%B9_%D0%BD%D0%BE%D0%BC%D0%B5%D1%80_CAS" title="Регистрационный номер CAS - russo" lang="ru" hreflang="ru" data-title="Регистрационный номер CAS" data-language-autonym="Русский" data-language-local-name="russo" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/CAS_registarski_broj" title="CAS registarski broj - serbo-croato" lang="sh" hreflang="sh" data-title="CAS registarski broj" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="serbo-croato" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/CAS_registry_number" title="CAS registry number - Simple English" lang="en-simple" hreflang="en-simple" data-title="CAS registry number" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Registra%C4%8Dn%C3%A9_%C4%8D%C3%ADslo_CAS" title="Registračné číslo CAS - slovacco" lang="sk" hreflang="sk" data-title="Registračné číslo CAS" data-language-autonym="Slovenčina" data-language-local-name="slovacco" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/%C5%A0tevilka_CAS" title="Številka CAS - sloveno" lang="sl" hreflang="sl" data-title="Številka CAS" data-language-autonym="Slovenščina" data-language-local-name="sloveno" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%A6%D0%90%D0%A1_%D1%80%D0%B5%D0%B3%D0%B8%D1%81%D1%82%D0%B0%D1%80%D1%81%D0%BA%D0%B8_%D0%B1%D1%80%D0%BE%D1%98" title="ЦАС регистарски број - serbo" lang="sr" hreflang="sr" data-title="ЦАС регистарски број" data-language-autonym="Српски / srpski" data-language-local-name="serbo" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/CAS-nummer" title="CAS-nummer - svedese" lang="sv" hreflang="sv" data-title="CAS-nummer" data-language-autonym="Svenska" data-language-local-name="svedese" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%9A%E0%AE%BF%E0%AE%8F%E0%AE%8E%E0%AE%9A%E0%AF%81_%E0%AE%8E%E0%AE%A3%E0%AF%8D" title="சிஏஎசு எண் - tamil" lang="ta" hreflang="ta" data-title="சிஏஎசு எண்" data-language-autonym="தமிழ்" data-language-local-name="tamil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B9%80%E0%B8%A5%E0%B8%82%E0%B8%97%E0%B8%B0%E0%B9%80%E0%B8%9A%E0%B8%B5%E0%B8%A2%E0%B8%99_CAS" title="เลขทะเบียน CAS - thailandese" lang="th" hreflang="th" data-title="เลขทะเบียน CAS" data-language-autonym="ไทย" data-language-local-name="thailandese" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tl mw-list-item"><a href="https://tl.wikipedia.org/wiki/Bilang_Pangrehistro_ng_CAS" title="Bilang Pangrehistro ng CAS - tagalog" lang="tl" hreflang="tl" data-title="Bilang Pangrehistro ng CAS" data-language-autonym="Tagalog" data-language-local-name="tagalog" class="interlanguage-link-target"><span>Tagalog</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/CAS_Kay%C4%B1t_Numaras%C4%B1" title="CAS Kayıt Numarası - turco" lang="tr" hreflang="tr" data-title="CAS Kayıt Numarası" data-language-autonym="Türkçe" data-language-local-name="turco" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9D%D0%BE%D0%BC%D0%B5%D1%80_CAS" title="Номер CAS - ucraino" lang="uk" hreflang="uk" data-title="Номер CAS" data-language-autonym="Українська" data-language-local-name="ucraino" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-ur mw-list-item"><a href="https://ur.wikipedia.org/wiki/%DA%A9%DB%8C%D9%85%DB%8C%D8%A7%D8%A6%DB%8C_%D8%B4%D8%B9%D8%A8%DB%82_%D8%A7%D8%AE%D9%84%D8%A7%D8%B5_%D8%A7%D9%86%D8%AF%D8%B1%D8%A7%D8%AC%DB%8C_%D8%B9%D8%AF%D8%AF" title="کیمیائی شعبۂ اخلاص اندراجی عدد - urdu" lang="ur" hreflang="ur" data-title="کیمیائی شعبۂ اخلاص اندراجی عدد" data-language-autonym="اردو" data-language-local-name="urdu" class="interlanguage-link-target"><span>اردو</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/S%E1%BB%91_%C4%91%C4%83ng_k%C3%BD_CAS" title="Số đăng ký CAS - vietnamita" lang="vi" hreflang="vi" data-title="Số đăng ký CAS" data-language-autonym="Tiếng Việt" data-language-local-name="vietnamita" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/CAS%E5%8F%B7" title="CAS号 - wu" lang="wuu" hreflang="wuu" data-title="CAS号" data-language-autonym="吴语" 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title="Collegamento all'elemento connesso dell'archivio dati [g]" accesskey="g"><span>Elemento Wikidata</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Strumenti pagine"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Aspetto"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Aspetto</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">sposta nella barra laterale</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">nascondi</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">Da Wikipedia, l'enciclopedia libera.</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="it" dir="ltr"><p>Il <b>numero CAS</b> è un identificativo numerico che individua in maniera univoca una <a href="/wiki/Sostanza_pura" title="Sostanza pura">sostanza chimica</a>. Il <i><a href="/wiki/Chemical_Abstracts_Service" title="Chemical Abstracts Service">Chemical Abstracts Service</a></i>, una divisione della <a href="/wiki/American_Chemical_Society" title="American Chemical Society">American Chemical Society</a>, assegna questi identificativi a ogni sostanza chimica descritta in letteratura. Oltre 63 milioni di composti hanno ricevuto un numero CAS e circa 7 000 vengono aggiunti ogni giorno. La maggior parte dei database molecolari permettono di fare ricerche in base al numero CAS. </p><p>Il numero CAS è costituito da tre sequenze di numeri separati da trattini. Il primo gruppo è costituito da un numero variabile di cifre, fino a sei, il secondo da due cifre, mentre il terzo e ultimo gruppo è costituito da una singola cifra che serve da codice di controllo. I numeri sono assegnati in ordine progressivo e non hanno quindi nessun significato chimico. Il codice di controllo viene calcolato moltiplicando ciascuna cifra da destra a sinistra per un numero intero progressivo (la cifra più a destra va moltiplicata per 1, quella immediatamente a sinistra per 2 e così via), sommando i vari termini e calcolando poi il <a href="/wiki/Aritmetica_modulare" title="Aritmetica modulare">modulo</a> 10 della somma così ottenuta. Per esempio il numero CAS dell'<a href="/wiki/Acqua" title="Acqua">acqua</a> è 7732-18-5 e il codice di controllo (5) è dato da <span class="nowrap">(8×1 + 1×2 + 2×3 + 3×4 + 7×5 + 7×6) mod 10 = 105 mod 10 = 5.</span> </p><p>Se una <a href="/wiki/Molecola" title="Molecola">molecola</a> ha più <a href="/wiki/Isomeria" title="Isomeria">isomeri</a> a ciascun isomero sarà assegnato un numero CAS differente. Per esempio il numero CAS del D-<a href="/wiki/Glucosio" title="Glucosio">glucosio</a> è 50-99-7 mentre quello del L-glucosio è 921-60-8. In alcuni casi particolari a una intera classe di composti è stato assegnato un unico numero CAS; per esempio tutte le <a href="/wiki/Alcol_deidrogenasi" title="Alcol deidrogenasi">alcol deidrogenasi</a> hanno come numero CAS 9031-72-5. </p> <div class="mw-heading mw-heading2"><h2 id="Voci_correlate">Voci correlate</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Numero_CAS&veaction=edit&section=1" title="Modifica la sezione Voci correlate" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Numero_CAS&action=edit&section=1" title="Edit section's source code: Voci correlate"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Chemical_Abstracts_Service" title="Chemical Abstracts Service">Chemical Abstracts Service</a></li> <li><a href="/wiki/Numero_EINECS" title="Numero EINECS">Numero EINECS</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Collegamenti_esterni">Collegamenti esterni</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Numero_CAS&veaction=edit&section=2" title="Modifica la sezione Collegamenti esterni" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Numero_CAS&action=edit&section=2" title="Edit section's source code: Collegamenti esterni"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Per ottenere il numero CAS di un composto di cui si conosce la <a href="/wiki/Formula_chimica" title="Formula chimica">formula chimica</a> o la struttura è possibile fare ricorso a uno dei seguenti database utilizzabili gratuitamente: </p> <ul><li><cite class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="http://www.chemexper.com/"><span style="font-style:italic;">ChemExper</span></a>, su <span style="font-style:italic;">chemexper.com</span>.</cite></li> <li><cite class="citation web" style="font-style:normal"> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20050706110821/http://chem2.sis.nlm.nih.gov/chemidplus/chemidlite.jsp"><span style="font-style:italic;">ChemIDplus</span></a>, su <span style="font-style:italic;">chem2.sis.nlm.nih.gov</span>. <small>URL consultato il 13 giugno 2004</small> <small>(archiviato dall'<abbr title="http://chem2.sis.nlm.nih.gov/chemidplus/chemidlite.jsp">url originale</abbr> il 6 luglio 2005)</small>.</cite></li> <li><cite class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="http://webbook.nist.gov/chemistry/"><span style="font-style:italic;">Chemistry WebBook</span></a>, su <span style="font-style:italic;">webbook.nist.gov</span>.</cite></li> <li><cite class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="https://web.archive.org/web/20050619231617/http://cactvs.cit.nih.gov/"><span style="font-style:italic;">NCI Database Browser</span></a>, su <span style="font-style:italic;">cactvs.cit.nih.gov</span>. <small>URL consultato il 13 giugno 2004</small> <small>(archiviato dall'<abbr title="http://cactvs.cit.nih.gov/">url originale</abbr> il 19 giugno 2005)</small>.</cite></li> <li>(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="https://web.archive.org/web/20140101220543/http://esis.jrc.ec.europa.eu/">ESIS (European chemical Substances Information Sytem)</a> European Chemicals Bureau, European Commission.</li> <li><cite class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr>, <abbr title="olandese">NL</abbr></span>) <a rel="nofollow" class="external text" href="https://web.archive.org/web/20030811230018/http://www-woc.sci.kun.nl/index.en.html"><span style="font-style:italic;">Dutch Dictionary on Organic Chemistry</span></a>, su <span style="font-style:italic;">www-woc.sci.kun.nl</span>. <small>URL consultato il 13 giugno 2004</small> <small>(archiviato dall'<abbr title="http://www-woc.sci.kun.nl/index.en.html">url originale</abbr> l'11 agosto 2003)</small>.</cite></li> <li><cite class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="http://chemsub.online.fr/"><span style="font-style:italic;">ChemSub Online</span></a>, su <span style="font-style:italic;">chemsub.online.fr</span>.</cite></li></ul> <p>Il seguente sito invece contiene i numeri CAS delle <a href="/wiki/Sostanza_pura#Sostanze_semplici,_composte_e_miscele" title="Sostanza pura">sostanze semplici</a>: </p> <ul><li><cite class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="http://www.periodictable.com/Properties/A/CASNumber.html"><span style="font-style:italic;">www.periodictable.com</span></a>, su <span style="font-style:italic;">periodictable.com</span>.</cite></li></ul> <style data-mw-deduplicate="TemplateStyles:r141815314">.mw-parser-output .navbox{border:1px solid #aaa;clear:both;margin:auto;padding:2px;width:100%}.mw-parser-output .navbox th{padding-left:1em;padding-right:1em;text-align:center}.mw-parser-output .navbox>tbody>tr:first-child>th{background:#ccf;font-size:90%;width:100%;color:var(--color-base,black)}.mw-parser-output .navbox_navbar{float:left;margin:0;padding:0 10px 0 0;text-align:left;width:6em}.mw-parser-output .navbox_title{font-size:110%}.mw-parser-output .navbox_abovebelow{background:#ddf;font-size:90%;font-weight:normal}.mw-parser-output .navbox_group{background:#ddf;font-size:90%;padding:0 10px;white-space:nowrap}.mw-parser-output .navbox_list{font-size:90%;width:100%}.mw-parser-output .navbox_list a{white-space:nowrap}html:not(.vector-feature-night-mode-enabled) .mw-parser-output .navbox_odd{background:#fdfdfd;color:var(--color-base,black)}html:not(.vector-feature-night-mode-enabled) .mw-parser-output .navbox_even{background:#f7f7f7;color:var(--color-base,black)}.mw-parser-output .navbox a.mw-selflink{color:var(--color-base,black)}.mw-parser-output .navbox_center{text-align:center}.mw-parser-output .navbox .navbox_image{padding-left:7px;vertical-align:middle;width:0}.mw-parser-output .navbox+.navbox{margin-top:-1px}.mw-parser-output .navbox .mw-collapsible-toggle{font-weight:normal;text-align:right;width:7em}body.skin--responsive .mw-parser-output .navbox_image img{max-width:none!important}.mw-parser-output .subnavbox{margin:-3px;width:100%}.mw-parser-output .subnavbox_group{background:#e6e6ff;padding:0 10px}@media screen{html.skin-theme-clientpref-night .mw-parser-output .navbox>tbody>tr:first-child>th{background:var(--background-color-interactive)!important}html.skin-theme-clientpref-night .mw-parser-output .navbox th{color:var(--color-base)!important}html.skin-theme-clientpref-night .mw-parser-output .navbox_abovebelow,html.skin-theme-clientpref-night .mw-parser-output .navbox_group{background:var(--background-color-interactive-subtle)!important}html.skin-theme-clientpref-night .mw-parser-output .subnavbox_group{background:var(--background-color-neutral-subtle)!important}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbox>tbody>tr:first-child>th{background:var(--background-color-interactive)!important}html.skin-theme-clientpref-os .mw-parser-output .navbox th{color:var(--color-base)!important}html.skin-theme-clientpref-os .mw-parser-output .navbox_abovebelow,html.skin-theme-clientpref-os .mw-parser-output .navbox_group{background:var(--background-color-interactive-subtle)!important}html.skin-theme-clientpref-os .mw-parser-output .subnavbox_group{background:var(--background-color-neutral-subtle)!important}}</style><table class="navbox mw-collapsible mw-collapsed noprint metadata" id="navbox-Rappresentazioni_delle_molecole"><tbody><tr><th colspan="3" style="background:azzurro;"><div class="navbox_navbar"><div class="noprint plainlinks" style="background-color:transparent; padding:0; font-size:xx-small; color:var(--color-base, #000000); white-space:nowrap;"><a href="/wiki/Template:Rappresentazioni_delle_molecole" title="Template:Rappresentazioni delle molecole"><span title="Vai alla pagina del template">V</span></a> · <a href="/w/index.php?title=Discussioni_template:Rappresentazioni_delle_molecole&action=edit&redlink=1" class="new" title="Discussioni template:Rappresentazioni delle molecole (la pagina non esiste)"><span title="Discuti del template">D</span></a> · <a class="external text" href="https://it.wikipedia.org/w/index.php?title=Template:Rappresentazioni_delle_molecole&action=edit"><span title="Modifica il template. Usa l'anteprima prima di salvare">M</span></a></div></div><span class="navbox_title">Rappresentazioni delle molecole</span></th></tr><tr><th colspan="1" class="navbox_group" style="background:azzurro;"><a href="/wiki/Formula_chimica" title="Formula chimica">Formula chimica</a></th><td colspan="1" class="navbox_list navbox_odd"><table class="subnavbox"><tbody><tr><th class="subnavbox_group" style="width:8.5em;"><a href="/wiki/Formula_di_struttura" title="Formula di struttura">Formula di struttura</a></th><td colspan="1"><table class="subnavbox"><tbody><tr><th class="subnavbox_group" style="width:8.5em;"><a href="/wiki/Formula_proiettiva" class="mw-redirect" title="Formula proiettiva">Formula proiettiva</a></th><td colspan="1"><a href="/w/index.php?title=Proiezione_a_cavalletto&action=edit&redlink=1" class="new" title="Proiezione a cavalletto (la pagina non esiste)">Proiezione a cavalletto</a> · <a href="/w/index.php?title=Proiezione_a_cuneo_e_tratteggio&action=edit&redlink=1" class="new" title="Proiezione a cuneo e tratteggio (la pagina non esiste)">Proiezione a cuneo e tratteggio</a> · <a href="/wiki/Proiezione_di_Fischer" title="Proiezione di Fischer">Proiezione di Fischer</a> · <a href="/wiki/Proiezione_di_Haworth" title="Proiezione di Haworth">Proiezione di Haworth</a> · <a href="/wiki/Proiezione_di_Natta" title="Proiezione di Natta">Proiezione di Natta</a> · <a href="/wiki/Proiezione_di_Newman" title="Proiezione di Newman">Proiezione di Newman</a> · <a href="/wiki/Conformazione#Conformazioni_in_cicloesano_e_derivati" title="Conformazione">Proiezione conformazionale</a></td></tr><tr><th class="subnavbox_group" style="width:8.5em;"><a href="/wiki/Modelli_molecolari" class="mw-redirect" title="Modelli molecolari">Modelli molecolari</a></th><td colspan="1"><a href="/wiki/Modello_ad_asta_e_sfera" title="Modello ad asta e sfera">Modello ad asta e sfera</a> · <a href="/wiki/Modello_a_calotta" title="Modello a calotta">Modello a calotta</a></td></tr><tr><th class="subnavbox_group" style="width:8.5em;">Altre</th><td colspan="1"><a href="/wiki/Formula_condensata" title="Formula condensata">Formula condensata</a> · <a href="/w/index.php?title=Formula_schematica&action=edit&redlink=1" class="new" title="Formula schematica (la pagina non esiste)">Formula schematica</a> · <a href="/wiki/Struttura_di_Lewis" title="Struttura di Lewis">Struttura di Lewis</a></td></tr></tbody></table></td></tr><tr><th class="subnavbox_group" style="width:8.5em;">Altre</th><td colspan="1"><a href="/wiki/Formula_bruta" title="Formula bruta">Formula bruta</a> · <a href="/wiki/Formula_minima" title="Formula minima">Formula minima</a> · <a href="/wiki/Formula_molecolare" title="Formula molecolare">Formula molecolare</a> · <a href="/wiki/Unit%C3%A0_di_formula" title="Unità di formula">Unità di formula</a></td></tr></tbody></table></td><td rowspan="3" class="navbox_image"><span typeof="mw:File"><a href="/wiki/File:Methane-CRC-MW-3D-balls.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/1f/Methane-CRC-MW-3D-balls.png/80px-Methane-CRC-MW-3D-balls.png" decoding="async" width="80" height="93" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/1f/Methane-CRC-MW-3D-balls.png/120px-Methane-CRC-MW-3D-balls.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/1f/Methane-CRC-MW-3D-balls.png/160px-Methane-CRC-MW-3D-balls.png 2x" data-file-width="942" data-file-height="1100" /></a></span></td></tr><tr><th colspan="1" class="navbox_group" style="background:azzurro;"><a href="/wiki/Nomenclatura_chimica" title="Nomenclatura chimica">Nomenclatura chimica</a></th><td colspan="1" class="navbox_list navbox_even"><a href="/wiki/Unione_internazionale_di_chimica_pura_e_applicata" title="Unione internazionale di chimica pura e applicata">IUPAC</a>, <a href="/wiki/Nomenclatura_IUPAC_dei_composti_organici" title="Nomenclatura IUPAC dei composti organici">Nomenclatura IUPAC dei composti organici</a>, <a href="/wiki/Nomenclatura_chimica#La_nomenclatura_chimica" title="Nomenclatura chimica">Nomenclatura tradizionale</a>, <a href="/wiki/Nomenclatura_chimica#La_nomenclatura_chimica" title="Nomenclatura chimica">Nomenclatura di Stock</a>, <a href="/w/index.php?title=Notazione_di_Hill&action=edit&redlink=1" class="new" title="Notazione di Hill (la pagina non esiste)">Notazione di Hill</a></td></tr><tr><th colspan="1" class="navbox_group" style="background:azzurro;">Codici di identificazione</th><td colspan="1" class="navbox_list navbox_odd"><a class="mw-selflink selflink">Numero CAS</a>, <a href="/wiki/Numero_EINECS" title="Numero EINECS">Numero EINECS</a>, <a href="/wiki/SMILES" title="SMILES">SMILES</a>, <a href="/w/index.php?title=International_Chemical_Identifier&action=edit&redlink=1" class="new" title="International Chemical Identifier (la pagina non esiste)">InChI</a>, <a href="/w/index.php?title=InChIKey&action=edit&redlink=1" class="new" title="InChIKey (la pagina non esiste)">InChIKey</a>, <a href="/wiki/PubChem#Numeri_identificativi" title="PubChem">Numeri PubChem</a></td></tr></tbody></table> <div class="noprint" style="width:100%; padding: 3px 0; display: flex; flex-wrap: wrap; row-gap: 4px; column-gap: 8px; box-sizing: border-box;"><div style="flex-grow: 1"><style data-mw-deduplicate="TemplateStyles:r140555418">.mw-parser-output .itwiki-template-occhiello{width:100%;line-height:25px;border:1px solid #CCF;background-color:#F0EEFF;box-sizing:border-box}.mw-parser-output .itwiki-template-occhiello-progetto{background-color:#FAFAFA}@media screen{html.skin-theme-clientpref-night .mw-parser-output .itwiki-template-occhiello{background-color:#202122;border-color:#54595D}html.skin-theme-clientpref-night .mw-parser-output .itwiki-template-occhiello-progetto{background-color:#282929}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output 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scienza della composizione, delle proprietà e delle trasformazioni della materia</div></div></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Estratto da "<a dir="ltr" href="https://it.wikipedia.org/w/index.php?title=Numero_CAS&oldid=141361211">https://it.wikipedia.org/w/index.php?title=Numero_CAS&oldid=141361211</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Categoria:Categorie" title="Categoria:Categorie">Categorie</a>: <ul><li><a href="/wiki/Categoria:Codici_dei_composti_chimici" title="Categoria:Codici dei composti chimici">Codici dei composti chimici</a></li><li><a href="/wiki/Categoria:American_Chemical_Society" title="Categoria:American Chemical Society">American Chemical 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