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Official EU label nameGlossary entry 7977

CYSTEIC 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:498-40-813100-82-8
EC:207-861-3
Ingredient index records:
CYSTEIC ACID
Cosmetic functions: SKIN CONDITIONING

L-3-Sulfoalanine

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1 matched or reported name
CYSTEIC ACID

Regulatory evidence across markets

None of the 13 markets tracked here holds an imported rule under the name CYSTEIC 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 13100-82-8
CAS 13100-82-8PubChem CID 25701

DL-Cysteic acid

Cysteic acid is an amino sulfonic acid that is the sulfonic acid analogue of cysteine. It has a role as an animal metabolite. It is an alanine derivative, a cysteine derivative, an amino sulfonic acid, a carboxyalkanesulfonic acid and a non-proteinogenic alpha-amino acid. — ChEBI

IUPAC name
2-amino-3-sulfopropanoic acid
Molecular formula
C3H7NO5S
Molecular weight
169.16 g/mol
Exact mass
169.00449350 Da
XLogP3
-4.5
Topological polar surface area
126.0 Ų
Hydrogen-bond donors
3
Hydrogen-bond acceptors
6
Covalent units
1
Defined stereocentres
0

Also known as

Cysteic AcidcysteateAlanine, 3-sulfo-beta-SulfoalanineA3OGP4C37WCYSTEIC ACID, DL-CHEBI:212603 Sulfoalanine
16 more reported names
beta SulfoalanineAcid, CysteicRefChem:9205463-Sulfoalanine3024-83-7Cysteinic acidCepteic acidCipteic acidCysteric acidDL-CYSTEICACID2-Amino-3-sulfopropionic acidCysteinesulfonate2-amino-3-sulfopropanoateL-CysteateDL-Alanine, 3-sulfo-UNII-A3OGP4C37W
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

Evidence from additional scientific databases

NIH PubChem PUG-View
Exact identifier match25701

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

  • Signal: Warning Source: European Chemicals Agency (ECHA)
  • GHS Hazard Statements: H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]; H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]; H335 (100%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation] Source: European Chemicals Agency (ECHA)
  • Precautionary Statement Codes: P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement) Source: European Chemicals Agency (ECHA)
  • ECHA C&L Notifications Summary: The GHS information provided by 1 company from 1 notification to the ECHA C&L Inventory. Source: European Chemicals Agency (ECHA)

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
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.

PubChem 2D chemical structure for CAS 498-40-8
CAS 498-40-8PubChem CID 72886

L-Cysteic acid

L-cysteic acid is the L-enantiomer of cysteic acid. It has a role as an Escherichia coli metabolite and a human metabolite. It is a cysteic acid, an amino sulfonic acid, a non-proteinogenic L-alpha-amino acid, a L-cysteine derivative and a L-alanine derivative. It is a conjugate acid of a L-cysteate(1-). — ChEBI

IUPAC name
(2R)-2-amino-3-sulfopropanoic acid
Molecular formula
C3H7NO5S
Molecular weight
169.16 g/mol
Exact mass
169.00449350 Da
XLogP3
-4.5
Topological polar surface area
126.0 Ų
Hydrogen-bond donors
3
Hydrogen-bond acceptors
6
Covalent units
1
Defined stereocentres
1

Also known as

Cysteinesulfonic acid(R)-2-Amino-3-sulfopropanoic acid3-sulfo-L-alanineCysteic acid, L-L-Alanine, 3-sulfo-Cysteic acid (VAN)sulfo-D-alanineCysteric acid
16 more reported names
Cipteic acidAlanine, 3-sulfo-, L-C3H7NO5SCysteinic acidCepteic acid(R)-cysteateM6W2DJ6N5Kalpha-amino-beta-sulfopropionic acid(2R)-2-amino-3-sulfo-propanoic acidL-CysteateNSC-254030EN300-3026812-Amino-3-sulfopropionic acidCysteinesulfonateCysteic acid; L-3-sulfo-alanineNSC 254030
Open full PubChem recordPubChem annotations3D structure image
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.

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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