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Official EU label nameGlossary entry 12104

HOMOCYSTEIC ACID

This record confirms an official common ingredient name for EU cosmetic product labelling. It does not by itself confirm that the substance is permitted, unrestricted or safe.

Global evidence snapshot

The resolved identity has matching regulatory evidence in 0 of 13 indexed market datasets: 0 country records and 0 EU Annex records. Every result and evidence gap is listed below.

0 markets with evidence
Markets checked
13
Markets with evidence
0
Evidence gaps
13
Resolved identifiers
3

Resolved substance identity

CAS:1001-13-4504-33-6
EC:207-991-0
Ingredient index records:
HOMOCYSTEIC ACID
Cosmetic functions: EXFOLIATING

Homocysteic Acid

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1 matched or reported name
HOMOCYSTEIC ACID

Regulatory evidence across markets

None of the 13 markets tracked here holds an imported rule under the name HOMOCYSTEIC ACID.

That is a statement about this inventory, not about the law: no imported rule is not evidence that a substance is permitted. A rule may exist under a different name, under a CAS or EC number this glossary entry does not carry, or in a dataset not yet imported.

Check the markets and their sourcesSearch every market for this name

Chemical identity and properties

PubChem 2D chemical structure for CAS 1001-13-4
CAS 1001-13-4CAS 504-33-6PubChem CID 92117

Homocysteic acid

Homocysteic acid is a non-proteinogenic alpha-amino acid that is homocysteine in which the thiol group has benn oxidised to the corresponding sulfonic acid. It is an amino sulfonic acid, a carboxyalkanesulfonic acid and a non-proteinogenic alpha-amino acid. It is functionally related to a homocysteine. — ChEBI

IUPAC name
2-amino-4-sulfobutanoic acid
Molecular formula
C4H9NO5S
Molecular weight
183.19 g/mol
Exact mass
183.02014356 Da
XLogP3
-3.6
Topological polar surface area
126.0 Ų
Hydrogen-bond donors
3
Hydrogen-bond acceptors
6
Covalent units
1
Defined stereocentres
0

Also known as

2-Amino-4-sulfobutyric acidCHEBI:90324(DL)-homocysteic acidRefChem:390733DL-Homocysteic acid504-33-6Butanoic acid, 2-amino-4-sulfo-C4H9NO5S
16 more reported names
EINECS 207-991-02-amino-4-sulfo-butanoic acidButyric acid, 2-amino-4-sulfo-HYA2G5T79LHOMOCYSTEIC ACID, DL-DL-HOMOCYSTEICACID(+/-)-HOMOCYSTEIC ACIDPDSP2_001254L-HCAd,l-homocysteic acidDL-2-Amino-4-sulfobutyric acidH-DL-HoCysteic acidUNII-HYA2G5T79L2-Amino-4-sulfobutyricacidDL-Homocysteic acid, 97%VBOQYPQEPHKASR-UHFFFAOYSA-
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

Evidence from additional scientific databases

EMBL-EBI ChEBI
Exact identifier matchCHEBI:90324

homocysteic acid

A non-proteinogenic α-amino acid that is homocysteine in which the thiol group has benn oxidised to the corresponding sulfonic acid.

Formula
C4H9NO5S
Average mass
183.185 g/mol
Monoisotopic mass
183.02014 Da
Formal charge
0
  • amino sulfonic acid — is a (CHEBI:37793)
  • carboxyalkanesulfonic acid — is a (CHEBI:38031)
  • non-proteinogenic α-amino acid — is a (CHEBI:83925)
  • homocysteine — has functional parent (CHEBI:17230)
  • amino sulfonic acid — is a (CHEBI:37793)
  • carboxyalkanesulfonic acid — is a (CHEBI:38031)
  • non-proteinogenic α-amino acid — is a (CHEBI:83925)
Additional curated names
2-amino-4-sulfobutanoic acid2-Amino-4-sulfobutyric acid
Cross-references from this source
  • CAS: 1001-13-4 — ChemIDplus
  • REGISTRY_NUMBER: 1783391 — Reaxys

Mapped by: Exact CAS cross-reference in the ChEBI compound record. Source updated: 2016-06-17. Retrieved: 2026-08-31. Open source record

NIH PubChem PUG-View
Exact identifier match92117

Attributed physical-property, hazard, environmental and use annotations.

Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record

Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.

Additional source coverage and match status
SourceResultChecked
EMBL-EBI ChEBIExact match2026-08-31
NIH PubChem PUG-ViewExact match2026-08-31

A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.

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

Additional authoritative substance research

Each link searches that source for this identity. A link is a research route, not a claim that the source holds an exact record. What each source is, and its legal weight

Cosmetic Ingredient Review safety assessmentsFDA Global Substance Registration SystemILO/WHO International Chemical Safety CardsJapan NITE-CHRIPNIOSH Pocket Guide to Chemical HazardsOECD eChemPortalUS EPA CompTox CTX APIs

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Official source and scope

Imported from Commission Implementing Decision (EU) 2025/1175 (dataset version EU 2025/1175). The glossary supplies common ingredient names for the ingredient list required by Article 19(1)(g); it is not an approval or safety list.

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