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<!DOCTYPE html><html><head><title>UNII - RGL5YE86CZ</title><meta charSet="utf-8"/><meta name="viewport" content="initial-scale=1.0, width=device-width"/><meta name="description" content="Substance Registration System"/><link rel="icon" href="/favicon.ico"/><meta name="next-head-count" content="5"/><link rel="preload" href="/uniisearch/_next/static/css/d4509333f706c57b9f3e.css" as="style"/><link rel="stylesheet" href="/uniisearch/_next/static/css/d4509333f706c57b9f3e.css" data-n-g=""/><noscript data-n-css=""></noscript><script defer="" nomodule="" src="/uniisearch/_next/static/chunks/polyfills-a40ef1678bae11e696dba45124eadd70.js"></script><script src="/uniisearch/_next/static/chunks/webpack-9b252583765b6e6f09ce.js" defer=""></script><script src="/uniisearch/_next/static/chunks/framework-895f067827ebe11ffe45.js" defer=""></script><script src="/uniisearch/_next/static/chunks/main-722982fdcca470fbee8a.js" defer=""></script><script 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src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" decoding="async" data-nimg="intrinsic" style="position:absolute;top:0;left:0;bottom:0;right:0;box-sizing:border-box;padding:0;border:none;margin:auto;display:block;width:0;height:0;min-width:100%;max-width:100%;min-height:100%;max-height:100%"/><noscript><img alt="PFDA official logo" srcSet="/uniisearch/_next/image?url=%2Funiisearch%2Fpfda-logo.png&w=256&q=75 1x, /uniisearch/_next/image?url=%2Funiisearch%2Fpfda-logo.png&w=640&q=75 2x" src="/uniisearch/_next/image?url=%2Funiisearch%2Fpfda-logo.png&w=640&q=75" decoding="async" data-nimg="intrinsic" style="position:absolute;top:0;left:0;bottom:0;right:0;box-sizing:border-box;padding:0;border:none;margin:auto;display:block;width:0;height:0;min-width:100%;max-width:100%;min-height:100%;max-height:100%" loading="lazy"/></noscript></div></div></a></div></div></div></header><div class="styles__PageBody-sc-1movbvx-1 gxqNJn"><div class="styles__PageContainer-sc-1movbvx-0 csYtDx"><nav class="usa-breadcrumb" aria-label="Breadcrumbs"><ol class="usa-breadcrumb__list"><li class="usa-breadcrumb__list-item"><a class="usa-breadcrumb__link" href="/uniisearch">home</a></li><li class="usa-breadcrumb__list-item usa-current" aria-current="page">RGL5YE86CZ</li></ol></nav><div class="styles__StyledSearchSection-sc-1w1qr7y-0 enCCQO"><form action="/srs" class="styles__StyledForm-sc-1w1qr7y-6 clvaHx"><div class="styles__StyledErrorMessage-sc-1w1qr7y-2 gjHGtN"></div><div class="styles__StyledRow-sc-1w1qr7y-11 gxCsKy"><div class="styles__StyledSearchBar-sc-1w1qr7y-1 hgyrUb"><input type="text" data-testid="textInput" class="usa-input styles__StyledTextInput-sc-1w1qr7y-8 hUXbPH" id="search" name="search" aria-autocomplete="list" aria-haspopup="true" aria-controls="searchMenu" aria-activedescendant="" aria-labelledby="searchMenu-label" value="" autoComplete="off" placeholder="Type in a search query or UNII" required=""/><ul hidden="" role="listbox" aria-haspopup="listbox" aria-expanded="false" aria-labelledby="searchMenu-label" tabindex="0" class="styles__StyledSearchHints-sc-1w1qr7y-3 cEcGBQ"><div class="styles__StyledHintInfo-sc-1w1qr7y-4 fOLGbL"><div>* (0 result)</div></div><div>Loading...</div></ul></div><button type="button" class="usa-button styles__StyledButton-sc-1w1qr7y-7 fbNoGb" data-testid="button">Search</button></div></form></div><h1>HYDROFLUORIC ACID</h1><ul role="grid" class="UniiDetails__StyledKeyValSection-sc-1mc6cko-1 lkwmOX"><li role="row" aria-readonly="true"><b role="rowheader">UNII:</b> <span role="gridcell">RGL5YE86CZ</span></li><li role="row" aria-readonly="true"><b role="rowheader">Formula:</b> <span role="gridcell">FH</span></li><li role="row" aria-readonly="true"><b role="rowheader">Preferred Substance Name:</b> <span role="gridcell">HYDROFLUORIC ACID</span></li><li role="row" aria-readonly="true"><b role="rowheader">InChIKey:</b> <span role="gridcell">KRHYYFGTRYWZRS-UHFFFAOYSA-N</span></li></ul><br/><div class="usa-accordion usa-accordion--bordered" data-testid="accordion" aria-multiselectable="true"><h4 class="usa-accordion__heading"><button type="button" class="usa-accordion__button" aria-expanded="true" aria-controls="2" data-testid="accordionButton_2">Synonyms and Mappings</button></h4><div id="2" data-testid="accordionItem_2" class="usa-accordion__content usa-prose"><ul role="list"><li role="listitem" aria-readonly="true" class="UniiDetails__StyledListItem-sc-1mc6cko-0 eqkoyq"><b>7664-39-3</b></li><li role="listitem" aria-readonly="true" class="UniiDetails__StyledListItem-sc-1mc6cko-0 eqkoyq"><b>231-634-8</b></li><li role="listitem" aria-readonly="true" class="UniiDetails__StyledListItem-sc-1mc6cko-0 eqkoyq"><b>HYDROFLUORIC ACID [HSDB]</b></li><li role="listitem" aria-readonly="true" class="UniiDetails__StyledListItem-sc-1mc6cko-0 eqkoyq"><b>HYDROFLUORIC ACID [MART.]</b></li><li role="listitem" aria-readonly="true" class="UniiDetails__StyledListItem-sc-1mc6cko-0 eqkoyq"><b>HYDROFLUORIC ACID [MI]</b></li><li role="listitem" aria-readonly="true" class="UniiDetails__StyledListItem-sc-1mc6cko-0 eqkoyq"><b>HYDROFLUORIC ACID [VANDF]</b></li><li role="listitem" aria-readonly="true" class="UniiDetails__StyledListItem-sc-1mc6cko-0 eqkoyq"><b>HYDROFLUORIC ACID [WHO-DD]</b></li><li role="listitem" aria-readonly="true" class="UniiDetails__StyledListItem-sc-1mc6cko-0 eqkoyq"><b>HYDROFLUORICUM ACIDUM</b></li><li role="listitem" aria-readonly="true" class="UniiDetails__StyledListItem-sc-1mc6cko-0 eqkoyq"><b>HYDROFLUORICUM ACIDUM [HPUS]</b></li><li role="listitem" aria-readonly="true" class="UniiDetails__StyledListItem-sc-1mc6cko-0 eqkoyq"><b>HYDROGEN FLUORIDE</b></li><li role="listitem" aria-readonly="true" class="UniiDetails__StyledListItem-sc-1mc6cko-0 eqkoyq"><b>HYDROGEN FLUORIDE [MI]</b></li><li role="listitem" aria-readonly="true" class="UniiDetails__StyledListItem-sc-1mc6cko-0 eqkoyq"><b>NSC-750679</b></li></ul></div><h4 class="usa-accordion__heading"><button type="button" class="usa-accordion__button" aria-expanded="true" aria-controls="1" data-testid="accordionButton_1">Resources</button></h4><div id="1" data-testid="accordionItem_1" class="usa-accordion__content usa-prose"><div class="common__Row-sc-1wkjsrq-0 UniiDetails__StyledRow-sc-1mc6cko-9 cTzEhM cegsqY"><ul class="UniiDetails__StyledList-sc-1mc6cko-8 ejApwP"><li><div class="UniiDetails__StyledLinkOut-sc-1mc6cko-2 dfQSOk"><a href="https://commonchemistry.cas.org/detail?cas_rn=7664-39-3" target="_blank" rel="noreferrer">Common Chemistry</a><div style="background:#0c68ad" class="UniiDetails__StyledIcon-sc-1mc6cko-3 kckiYI"><b>i</b></div></div></li><li><div class="UniiDetails__StyledLinkOut-sc-1mc6cko-2 dfQSOk"><a href="https://drugs.ncats.io/substance/RGL5YE86CZ" target="_blank" rel="noreferrer">Inxight Drugs</a><div style="background:#0c68ad" class="UniiDetails__StyledIcon-sc-1mc6cko-3 kckiYI"><b>i</b></div></div></li><li><div class="UniiDetails__StyledLinkOut-sc-1mc6cko-2 dfQSOk"><a href="https://dailymed.nlm.nih.gov/dailymed/search.cfm?adv=1&query=RGL5YE86CZ" target="_blank" rel="noreferrer">DailyMed Regulated Products</a><div style="background:#0c68ad" class="UniiDetails__StyledIcon-sc-1mc6cko-3 kckiYI"><b>i</b></div></div></li><li><div class="UniiDetails__StyledLinkOut-sc-1mc6cko-2 dfQSOk"><a href="https://precision.fda.gov/ginas/app/ui/substances/RGL5YE86CZ" target="_blank" rel="noreferrer">GSRS Full Record</a><div style="background:#0c68ad" class="UniiDetails__StyledIcon-sc-1mc6cko-3 kckiYI"><b>i</b></div></div></li><li><div class="UniiDetails__StyledLinkOut-sc-1mc6cko-2 dfQSOk"><a href="https://ncit.nci.nih.gov/ncitbrowser/ConceptReport.jsp?dictionary=NCI%20Thesaurus&code=C82286" target="_blank" rel="noreferrer">NCI Thesaurus</a><div style="background:#0c68ad" class="UniiDetails__StyledIcon-sc-1mc6cko-3 kckiYI"><b>i</b></div></div></li><li><div class="UniiDetails__StyledLinkOut-sc-1mc6cko-2 dfQSOk"><a href="https://pubchem.ncbi.nlm.nih.gov/compound/14917" target="_blank" rel="noreferrer">PubChem</a><div style="background:#0c68ad" class="UniiDetails__StyledIcon-sc-1mc6cko-3 kckiYI"><b>i</b></div></div></li><li><div class="UniiDetails__StyledLinkOut-sc-1mc6cko-2 dfQSOk"><a href="https://comptox.epa.gov/dashboard/chemical/details/DTXSID1049641" target="_blank" rel="noreferrer">CompTox Chemicals Dashboard</a><div style="background:#0c68ad" class="UniiDetails__StyledIcon-sc-1mc6cko-3 kckiYI"><b>i</b></div></div></li></ul></div></div></div><div class="usa-alert usa-alert--info usa-alert--no-icon UniiDetails__StyledAlert-sc-1mc6cko-11 gTraQs" data-testid="alert"><div class="usa-alert__body"><h4 class="usa-alert__heading">Note</h4><p class="usa-alert__text">UNIIs are generated based on scientific identity characteristics using ISO 11238 data elements. UNII availability does not imply any regulatory review or approval. Synonyms and mappings are based on the best public information available at the time of publication. 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