Official EU label nameGlossary entry 1689

AMINOETHANESULFINIC 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.

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Resolved identifiers

Resolved substance identity

CAS:300-84-5

Ingredient index records:

AMINOETHANESULFINIC ACID

Cosmetic functions: ANTIOXIDANT, REDUCING

Ethanesulfinic acid, 2-amino-

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1 matched or reported name

AMINOETHANESULFINIC ACID

Regulatory evidence across markets

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

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Chemical identity and properties

PubChem 2D chemical structure for CAS 300-84-5

CAS 300-84-5PubChem CID 107812

Hypotaurine

Hypotaurine is an aminosulfinic acid comprising ethylamine having the sulfo group at the 2-position. It has a role as a metabolite, a mouse metabolite and a human metabolite. It is a conjugate acid of a hypotaurine(1-). It is a tautomer of a hypotaurine zwitterion. — ChEBI

IUPAC name: 2-aminoethanesulfinic acid

Molecular formula: C2H7NO2S
Molecular weight: 109.15 g/mol
Exact mass: 109.01974964 Da
XLogP3: -1.5
Topological polar surface area: 82.5 Å²
Hydrogen-bond donors: 2
Hydrogen-bond acceptors: 4
Covalent units: 1
Defined stereocentres: 0

Also known as

Ethanesulfinic acid, 2-amino-2-aminoethane-1-sulfinic acidaminoethanesulfinic acid5L08GE4332CHEBI:166682-azaniumylethanesulfinateRefChem:147481428-720-4

16 more reported names

627-467-92-Aminoethylsulfinic acidCystaminesulfinic acidCystaminesulfinateUNII-5L08GE43322-Aminoethylsulfinic Acid; 2-Aminoethanesulfinic Acid2-Aminoethylsulfinic AcidCystaminesulfinic Acid2-AminoethylsulfinateTocris-02082-amino-EthanesulfinateLopac-H-1384Taurolithocholic Impurity 92-amino-Ethanesulfinic acidLopac0_0005732-aminoethane-1-sulfinicacidHypotaurine, >=98% (TLC)HMS3261D08

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External database identifiers

ChEBI:CHEBI:16668
ChEMBL:CHEMBL1256480
EPA DTXSID:DTXSID60861856
EPA DTXSID:DTXSID8075380
PubMed:23665415
PubMed:22984571
PubMed:22590687
PubMed:22590579
PubMed:22428004
PubMed:22414809
PubMed:22391325
PubMed:22331997
PubMed:22331189
PubMed:22319547
PubMed:22282765
PubMed:22257742

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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