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CAS 2002-22-4

CAS 2002-22-4 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 2002-22-4
CAS 2002-22-4PubChem CID 2733604

(alphaS)-alpha-Amino-2,3-dihydro-2-thioxo-1H-imidazole-4-propanoic acid

IUPAC name
(2S)-2-amino-3-(2-sulfanylidene-1,3-dihydroimidazol-4-yl)propanoic acid
Molecular formula
C6H9N3O2S
Molecular weight
187.22 g/mol
Exact mass
187.04154771 Da
XLogP3
-3.6
Topological polar surface area
119.0 Ų
Hydrogen-bond donors
4
Hydrogen-bond acceptors
4
Covalent units
1
Defined stereocentres
1

Also known as

L-ThiolhistidineMH6EDB26P8RefChem:4057682-Mercapto-L-histidineThiohistidine(S)-2-Amino-3-(2-thioxo-2,3-dihydro-1H-imidazol-4-yl)propanoic acidL-2-MercaptohistidineH-2-MERCAPTO-HIS-OH
16 more reported names
HISTIDINE, 2-MERCAPTO-, L-(2S)-2-amino-3-(2-sulfanyl-1H-imidazol-4-yl)propanoic acid1H-Imidazole-4-propanoic acid, alpha-amino-2,3-dihydro-2-thioxo-, (alphaS)-1H-IMIDAZOLE-4-PROPANOIC ACID, .ALPHA.-AMINO-2,3-DIHYDRO-2-THIOXO-, (S)-UNII-MH6EDB26P8EINECS 217-899-2(S)-2-Mercaptohistidine(S)-alpha-Amino-2,3-dihydro-2-thioxo-1H-imidazole-4-propionic acidL-2-THIOXOHISTIDINETHIOHISTIDINE [INCI]GLXC-256442-Mercapto-L-histidine, AldrichCPR(|AS)-|A-Amino-2,3-dihydro-2-thioxo-1H-Imidazole-4-propanoic AcidEBC-64035(2S)-2-Azaniumyl-3-(2-sulfanylidene-1,3-dihydroimidazol-4-yl)propanoate2-THIOLHISTIDINE L-FORM [MI]
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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 2002-22-4

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How CAS 2002-22-4 is used on this site

CAS 2002-22-4 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 2002-22-4 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.