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CAS 4207-40-3

CAS 4207-40-3 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 4207-40-3

CAS 4207-40-3PubChem CID 18629419

Allantoin Acetyl Methionine

IUPAC name: 2-acetamido-4-methylsulfanylbutanoic acid;(2,5-dioxoimidazolidin-4-yl)urea

Molecular formula: C11H19N5O6S
Molecular weight: 349.37 g/mol
Exact mass: 349.10560452 Da
Topological polar surface area: 205.0 Å²
Hydrogen-bond donors: 6
Hydrogen-bond acceptors: 7
Covalent units: 2
Defined stereocentres: 0

Also known as

ALMETHAllantoin N-acetyl-DL-methionineEINECS 224-126-2UNII-C554034748RefChem:110740ALLANTOIN ACETYL METHIONINE [INCI]224-126-21-(2,5-Dioxoimidazolidin-4-yl)urea 2-acetamido-4-(methylthio)butanoate

3 more reported names

N-Acetyl-DL-methionine, compound with (2,5-dioxo-4-imidazolidine)urea (1:1)Allantoin acetyl methionine, Allantoin N-acetyl-DL-methionineN-Acetylmethionine--N-(2,5-dioxoimidazolidin-4-yl)urea (1/1)

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External database identifiers

EPA DTXSID:DTXSID80884047

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 4207-40-3

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How CAS 4207-40-3 is used on this site

CAS 4207-40-3 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 4207-40-3 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.