{"id":10621,"date":"2026-03-08T19:17:55","date_gmt":"2026-03-08T19:17:55","guid":{"rendered":"https:\/\/longchangextracts.com\/azelaic-acid-cas-123-99-9-a-comprehensive-guide-to-this-versatile-dicarboxylic-acid\/"},"modified":"2026-08-04T01:17:37","modified_gmt":"2026-08-04T01:17:37","slug":"azelaic-acid-cas-123-99-9-a-comprehensive-guide-to-this-versatile-dicarboxylic-acid","status":"publish","type":"post","link":"https:\/\/longchangextracts.com\/da\/azelaic-acid-cas-123-99-9-a-comprehensive-guide-to-this-versatile-dicarboxylic-acid\/","title":{"rendered":"Azelainsyres struktur, formel og molekyl\u00e6re identitet (CAS 123-99-9)"},"content":{"rendered":"
\n

Azelainsyres struktur, formel og molekyl\u00e6re identitet (CAS 123-99-9)<\/h1>\n

Azelainsyre<\/strong> er den alfa,omega-dicarboxylsyre med ni kulstofatomer, der er identificeret med CAS-nummer 123-99-9. Dens IUPAC-betegnelse er nonandisyre, og dens molekylformel er C9<\/sub>H16<\/sub>O4<\/sub>, og dets molekylv\u00e6gt er 188,2209 g\/mol. For at sikre en entydig identifikation af stoffet skal du bruge CAS-nummeret sammen med strukturformlen, InChIKey eller SMILES \u2013 ikke kun formlen alene.<\/p>\n

Azelainsyre \u2013 oversigt<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n
Almindeligt navn<\/th>\nAzelainsyre<\/td>\n<\/tr>\n
IUPAC-betegnelse<\/th>\nNonandisyre<\/td>\n<\/tr>\n
CAS-registreringsnummer<\/th>\n123-99-9<\/td>\n<\/tr>\n
EF-nummer<\/th>\n204-669-1<\/td>\n<\/tr>\n
Molekyl\u00e6r formel<\/th>\nC9<\/sub>H16<\/sub>O4<\/sub><\/td>\n<\/tr>\n
Molekylv\u00e6gt<\/th>\n188,2209 g\/mol (NIST; afrundes normalt til 188,22)<\/td>\n<\/tr>\n
Kondenseret strukturformel<\/th>\nHOOC-(CH2<\/sub>)7<\/sub>-COOH<\/td>\n<\/tr>\n
InChIKey<\/th>\nBDJRBEYXGGNYIS-UHFFFAOYSA-N<\/td>\n<\/tr>\n
Canoniske SMILES-koder<\/th>\nC(CCCC(=O)O)CCCC(=O)O<\/code><\/td>\n<\/tr>\n
PubChem CID<\/th>\n2266<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n

Identitetshenvisninger: NIST Chemistry WebBook: Azelainsyre<\/a>, PubChem CID 2266<\/a> og ECHA-stofoplysninger<\/a>.<\/p>\n

Hvad viser azelainsyrens struktur?<\/h2>\n

Den kondenserede struktur HOOC-(CH2<\/sub>)7<\/sub>-COOH har en carboxylgruppe i hver ende af en k\u00e6de best\u00e5ende af syv methylengrupper. T\u00e6ller man begge carboxyl-kulstofatomer med, f\u00e5r man i alt ni kulstofatomer, og derfor er det systematiske navn nonandioesyre<\/strong>.<\/p>\n

De to terminale carboxylgrupper g\u00f8r azelainsyre til en alfa,omega-dicarboxylsyre. Molekylet indeholder hverken dobbeltbindinger eller aromatiske ringe. Dets struktur b\u00f8r ikke forveksles med sebacinsyre, suberinsyre, oliesyre eller et salt\/ester afledt af azelainsyre.<\/p>\n

Molekylformel kontra strukturformel<\/h2>\n
\n\n\n\n\n\n\n\n\n\n
Identifikator<\/th>\nHvad det fort\u00e6ller dig<\/th>\nHvad det ikke kan bevise alene<\/th>\n<\/tr>\n<\/thead>\n
C9<\/sub>H16<\/sub>O4<\/sub><\/td>\nAntallet af grundstoffer i et neutralt molekyle<\/td>\nEn formel er ikke altid en entydig identifikator for et stof<\/td>\n<\/tr>\n
HOOC-(CH2<\/sub>)7<\/sub>-COOH<\/td>\nFunktionelle grupper og deres placering i k\u00e6den<\/td>\nKvalitet, renhed, urenhedsprofil eller partinummer<\/td>\n<\/tr>\n
CAS-nr. 123-99-9<\/td>\nDen p\u00e5t\u00e6nkte registreringspost<\/td>\nAt en forsendelse opfylder k\u00f8berens specifikationer<\/td>\n<\/tr>\n
InChIKey \/ SMILES<\/td>\nMaskinl\u00e6sbar tilkobling til kontrol af strukturen<\/td>\nFremstillingsmetode, lovgivningsm\u00e6ssig status eller egnethed til anvendelse<\/td>\n<\/tr>\n
Aktuel specifikation og COA for partiet<\/td>\nTestgr\u00e6nser, metoder og relevante partiresultater<\/td>\nK\u00f8berprocessens ydeevne uden kvalifikationstest<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n

Molekylv\u00e6gt af azelainsyre<\/h2>\n

NIST angiver en molekylv\u00e6gt p\u00e5 188,2209 g\/mol<\/strong>; 188,22 g\/mol er den almindeligt anvendte afrundede v\u00e6rdi. Ved beregningerne skal der anvendes den n\u00f8jagtighed, som kr\u00e6ves i henhold til k\u00f8berens metode, og der skal skelnes mellem den neutrale syre og salte, estere, solvater eller blandinger.<\/p>\n

Azelaic Acid's smeltepunkt<\/h2>\n

If\u00f8lge NIST\u2019s fase\u00e6ndringsdata er fusions temperaturerne 379,7 og 380,0 K, hvilket svarer til cirka 106,6\u2013106,9 \u00b0C<\/strong>. Et litteratursmeltepunkt er nyttigt i forbindelse med identitetsbestemmelse, men det er hverken en Longchang-frigivelsesspecifikation eller en erstatning for den g\u00e6ldende testmetode, acceptgr\u00e6nserne og det g\u00e6ldende partiresultat.<\/p>\n

Kilde: NIST-data om fase\u00e6ndringer for azelainsyre<\/a>.<\/p>\n

Azelainsyres opl\u00f8selighed i vand<\/h2>\n

PubChems samlede data omfatter vandopl\u00f8seligheden af 2,4 g\/l ved 20 \u00b0C<\/strong> og beskriver en st\u00f8rre opl\u00f8selighed i varmt vand og alkohol. Opl\u00f8seligheden afh\u00e6nger af temperaturen, opl\u00f8sningsmidlets sammens\u00e6tning, partiklernes egenskaber, pH-v\u00e6rdien og testmetoden. Formuleringsansvarlige b\u00f8r kontrollere de n\u00f8jagtige betingelser, der kr\u00e6ves for deres proces, i stedet for at betragte en enkelt referencev\u00e6rdi som en garanti for formuleringen.<\/p>\n

S\u00e5dan kontrolleres CAS-nummeret 123-99-9 inden indk\u00f8b<\/h2>\n
    \n
  1. Find det navn, der svarer til azelainsyre eller nonandioinsyre, med CAS-nummeret 123-99-9.<\/li>\n
  2. Bekr\u00e6ft formel C9<\/sub>H16<\/sub>O4<\/sub> og strukturen med to carboxylgrupper i enderne.<\/li>\n
  3. Brug InChIKey BDJRBEYXGGNYIS-UHFFFAOYSA-N<\/code> eller SMILES, n\u00e5r det g\u00e6lder om at finde match i databaser.<\/li>\n
  4. Angiv i tilbudsanmodningen krav til analysemetode\/-grundlag, udseende, vandindhold, farve, syretal og urenheder.<\/li>\n
  5. Gennemg\u00e5 den aktuelle leverand\u00f8rspecifikation, SDS-status og det relevante COA for partiet, inden du modtager en leverance.<\/li>\n<\/ol>\n

    Regulatoriske begr\u00e6nsninger og begr\u00e6nsninger for produktanvendelse<\/h2>\n

    Azelainsyre er anf\u00f8rt p\u00e5 etiketterne til bestemte f\u00e6rdigfremstillede topiske l\u00e6gemidler, men et f\u00e6rdigprodukts etiket, koncentration og godkendelse er ikke ensbetydende med, at r\u00e5varen er af farmaceutisk kvalitet eller har en godkendt anvendelse. For eksempel er DailyMed Azelex-indl\u00e6gssedlen<\/a> g\u00e6lder for den n\u00e6vnte 20%-creme og dens dokumenterede sammens\u00e6tning.<\/p>\n

    Azelainsyre er ogs\u00e5 ikke f\u00f8devaretils\u00e6tningsstof E900<\/strong>. Den konsoliderede EU-forordning om f\u00f8devaretils\u00e6tningsstoffer fastl\u00e6gger E 900 som dimethylpolysiloxan<\/a>. Man b\u00f8r ikke udlede, at et stof er egnet til anvendelse som f\u00f8devaretils\u00e6tningsstof, GRAS-stof, l\u00e6gemiddel, kosmetisk produkt eller til andre regulerede form\u00e5l ud fra CAS-identifikationssiden.<\/p>\n

    Fra molekyl\u00e6r identitet til anvendelseskvalificering<\/h2>\n

    N\u00e5r identiteten er bekr\u00e6ftet, skal du bruge Azelaic Acid \u2013 egenskaber og vejledning til industriel indk\u00f8b<\/a> for at fastl\u00e6gge sp\u00f8rgsm\u00e5l til udv\u00e6lgelse af ans\u00f8gere, specifikationsfelter og en anmodning om tilbud.<\/p>\n

    Se siden om indk\u00f8b af azelainsyre (CAS-nr. 123-99-9)<\/a> eller e-mail info@longchangchemical.com<\/a> med hensyn til den tilsigtede anvendelse, de kr\u00e6vede pr\u00f8ver, m\u00e6ngden, bestemmelsesstedet og dokumentationskravene.<\/p>\n

    Ofte stillede sp\u00f8rgsm\u00e5l<\/h2>\n

    Hvad er den kemiske formel for azelainsyre?<\/h3>\n

    Den molekyl\u00e6re formel er C9<\/sub>H16<\/sub>O4<\/sub>.<\/p>\n

    Hvad er strukturformlen for azelainsyre?<\/h3>\n

    Den forkortede strukturformel er HOOC-(CH2<\/sub>)7<\/sub>-COOH, med en carboxylgruppe i hver ende af k\u00e6den.<\/p>\n

    Hvad er det IUPAC-navn for azelainsyre?<\/h3>\n

    IUPAC-betegnelsen er nonandisyre.<\/p>\n

    Hvad er azelainsyrens molekylv\u00e6gt?<\/h3>\n

    NIST angiver 188,2209 g\/mol, hvilket normalt afrundes til 188,22 g\/mol.<\/p>\n

    Er azelainsyre det samme som E900?<\/h3>\n

    Nej. I EU\u2019s lovgivning om f\u00f8devaretils\u00e6tningsstoffer defineres E 900 som dimethylpolysiloxan, ikke som azelainsyre.<\/p>\n<\/article>","protected":false},"excerpt":{"rendered":"

    Azelaic Acid Structure, Formula and Molecular Identity (CAS 123-99-9) Azelaic Acid is the nine-carbon alpha,omega-dicarboxylic acid identified by CAS 123-99-9. Its IUPAC name is nonanedioic acid, its molecular formula is C9H16O4, and its molecular weight is 188.2209 g\/mol. For unambiguous material matching, use the CAS together with the structural formula, InChIKey or SMILES\u2014not the formula […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[46],"tags":[],"yoast_head":"\nAzelaic Acid Structure & Formula | CAS 123-99-9<\/title>\n<meta name=\"description\" content=\"Verify azelaic acid structure, formula C9H16O4, molecular weight 188.22, identifiers and sourcing checks for CAS 123-99-9.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/longchangextracts.com\/da\/azelaic-acid-cas-123-99-9-a-comprehensive-guide-to-this-versatile-dicarboxylic-acid\/\" \/>\n<meta property=\"og:locale\" content=\"da_DK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Azelaic Acid Structure & Formula | CAS 123-99-9\" \/>\n<meta property=\"og:description\" content=\"Verify azelaic acid structure, formula C9H16O4, molecular weight 188.22, identifiers and sourcing checks for CAS 123-99-9.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/longchangextracts.com\/da\/azelaic-acid-cas-123-99-9-a-comprehensive-guide-to-this-versatile-dicarboxylic-acid\/\" \/>\n<meta property=\"og:site_name\" content=\"China Chemical Manufacturer\" \/>\n<meta property=\"article:published_time\" content=\"2026-03-08T19:17:55+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-08-04T01:17:37+00:00\" \/>\n<meta name=\"author\" content=\"Longchang Chemical\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Skrevet af\" \/>\n\t<meta name=\"twitter:data1\" content=\"Longchang Chemical\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimeret l\u00e6setid\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutter\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/longchangextracts.com\/azelaic-acid-cas-123-99-9-a-comprehensive-guide-to-this-versatile-dicarboxylic-acid\/\",\"url\":\"https:\/\/longchangextracts.com\/azelaic-acid-cas-123-99-9-a-comprehensive-guide-to-this-versatile-dicarboxylic-acid\/\",\"name\":\"Azelaic Acid Structure & Formula | CAS 123-99-9\",\"isPartOf\":{\"@id\":\"https:\/\/longchangextracts.com\/#website\"},\"datePublished\":\"2026-03-08T19:17:55+00:00\",\"dateModified\":\"2026-08-04T01:17:37+00:00\",\"author\":{\"@id\":\"https:\/\/longchangextracts.com\/#\/schema\/person\/80933ac6926ad63fea74ec33f8d04869\"},\"description\":\"Verify azelaic acid structure, formula C9H16O4, molecular weight 188.22, identifiers and sourcing checks for CAS 123-99-9.\",\"breadcrumb\":{\"@id\":\"https:\/\/longchangextracts.com\/azelaic-acid-cas-123-99-9-a-comprehensive-guide-to-this-versatile-dicarboxylic-acid\/#breadcrumb\"},\"inLanguage\":\"da-DK\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/longchangextracts.com\/azelaic-acid-cas-123-99-9-a-comprehensive-guide-to-this-versatile-dicarboxylic-acid\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/longchangextracts.com\/azelaic-acid-cas-123-99-9-a-comprehensive-guide-to-this-versatile-dicarboxylic-acid\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/longchangextracts.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Azelaic Acid Structure, Formula and Molecular Identity (CAS 123-99-9)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/longchangextracts.com\/#website\",\"url\":\"https:\/\/longchangextracts.com\/\",\"name\":\"China Chemical Manufacturer\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/longchangextracts.com\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"da-DK\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/longchangextracts.com\/#\/schema\/person\/80933ac6926ad63fea74ec33f8d04869\",\"name\":\"Longchang Chemical\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"da-DK\",\"@id\":\"https:\/\/longchangextracts.com\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/c1e84ee0759373263198c58e8f338f80?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/c1e84ee0759373263198c58e8f338f80?s=96&d=mm&r=g\",\"caption\":\"Longchang Chemical\"},\"description\":\"Longchang Chemical is the company publisher of chemical, ingredient and technical procurement information on longchangextracts.com. 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