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CAS 4492-73-3

CAS 4492-73-3 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 4492-73-3
CAS 4492-73-3PubChem CID 6452010

Allantoin Biotin

IUPAC name
5-[(3aS,4S,6aR)-2-oxo-1,3,3a,4,6,6a-hexahydrothieno[3,4-d]imidazol-4-yl]pentanoic acid;(2,5-dioxoimidazolidin-4-yl)urea
Molecular formula
C14H22N6O6S
Molecular weight
402.43 g/mol
Exact mass
402.13215362 Da
Topological polar surface area
217.0 Ų
Hydrogen-bond donors
7
Hydrogen-bond acceptors
7
Covalent units
2
Defined stereocentres
3

Also known as

UNII-8445SU9RKR8445SU9RKRUREA, (2,5-DIOXO-4-IMIDAZOLIDINYL)-, MONO((3AS,4S,6AR)-HEXAHYDRO-2-OXO-1H-THIENO(3,4-D)IMIDAZOLE-4-PENTANOATE)UREA, (2,5-DIOXO-4-IMIDAZOLIDINYL)-, MONO((3AS-(3A.ALPHA.,4.BETA.,6A.ALPHA.))-HEXAHYDRO-2-OXO-1H-THIENO(3,4-D)IMIDAZOLE-4-PENTANOATE)RefChem:110742ALLANTOIN BIOTIN [INCI]1H-THIENO(3,4-D)IMIDAZOLE-4-PENTANOIC ACID, HEXAHYDRO-2-OXO-, (3AS-(3AALPHA,4BETA,6AALPHA))-, COMPD. WITH (2,5-DIOXO-4-IMIDAZOLIDINYL)UREA (1:1)UREA, (2,5-DIOXO-4-IMIDAZOLIDINYL)-, MONO((3AS-(3AALPHA,4BETA,6AALPHA))-HEXAHYDRO-2-OXO-1H-THIENO(3,4-D)IMIDAZOLE-4-PENTANOATE)
1 more reported name
5-[(3aS,4S,6aR)-2-Oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl]pentanoic acid--N-(2,5-dioxoimidazolidin-4-yl)urea (1/1)
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External database identifiers

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 4492-73-3

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How CAS 4492-73-3 is used on this site

CAS 4492-73-3 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 4492-73-3 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.