Official EU label nameGlossary entry 7973

CYSTEAMINE

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.

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Evidence gaps

Resolved identifiers

Resolved substance identity

CAS:60-23-1

Ingredient index records:

CYSTEAMINE

Cosmetic functions: HAIR WAVING OR STRAIGHTENING

Ethanethiol, 2-amino- or Mercaptamine

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1 matched or reported name

CYSTEAMINE

Regulatory evidence across markets

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

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.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 60-23-1

CAS 60-23-1PubChem CID 6058

Cysteamine

Cysteamine is an amine that consists of an ethane skeleton substituted with a thiol group at C-1 and an amino group at C-2. It has a role as a geroprotector, a radiation protective agent, a mouse metabolite and a human metabolite. It is a thiol and an amine. It is functionally related to an ethylamine. It is a conjugate base of a cysteaminium. — ChEBI

IUPAC name: 2-aminoethanethiol

Molecular formula: C2H7NS
Molecular weight: 77.15 g/mol
Exact mass: 77.02992040 Da
XLogP3: -0.4
Topological polar surface area: 27.0 Å²
Hydrogen-bond donors: 2
Hydrogen-bond acceptors: 2
Covalent units: 1
Defined stereocentres: 0

Also known as

MercaptamineThioethanolamine2-MercaptoethylamineMercaminebeta-MercaptoethylamineDecarboxycysteineCysteinamine2-Amino-1-ethanethiol

16 more reported names

beta-AminoethanethiolEthanethiol, 2-amino-Mercaptoethylamine2-Mercaptoethanaminebeta-Aminoethylthiol2-Aminoethyl mercaptanbeta-MEAMercaptaminaMercaptaminum2-AMINO-ETHANETHIOL2-aminoethane-1-thiolL-15735UX2SD1KE2NSC-647528CHEBI:171412 Aminoethanethiol

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External database identifiers

ChEBI:CHEBI:17141
ChEMBL:CHEMBL602
EPA DTXSID:DTXSID3022875
PubMed:23099840
PubMed:23001131
PubMed:22990952
PubMed:22951960
PubMed:22943046
PubMed:22898660
PubMed:22870972
PubMed:22858756
PubMed:22837021
PubMed:22832073
PubMed:22822152
PubMed:22809364

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 assessments FDA Global Substance Registration System ILO/WHO International Chemical Safety Cards Japan NITE-CHRIP NIOSH Pocket Guide to Chemical Hazards OECD eChemPortal US 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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