Official EU label nameGlossary entry 15679

LYSINE CARBOXYMETHYL CYSTEINATE

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

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Markets with evidence

Evidence gaps

Resolved identifiers

Resolved substance identity

CAS:79458-68-749673-81-6

EC:279-164-2256-425-9

Ingredient index records:

LYSINE CARBOXYMETHYL CYSTEINATE

Cosmetic functions: HAIR WAVING OR STRAIGHTENING, SKIN CONDITIONING

DL-Lysine, compound with S-(carboxymethyl)-L-cysteine (1:1)

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1 matched or reported name

LYSINE CARBOXYMETHYL CYSTEINATE

Regulatory evidence across markets

None of the 13 markets tracked here holds an imported rule under the name LYSINE CARBOXYMETHYL CYSTEINATE.

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 49673-81-6

CAS 49673-81-6PubChem CID 6452154

L-Lysine, compd. with S-(carboxymethyl)-L-cysteine (1:1)

IUPAC name: (2R)-2-amino-3-(carboxymethylsulfanyl)propanoic acid;(2S)-2,6-diaminohexanoic acid

Molecular formula: C11H23N3O6S
Molecular weight: 325.38 g/mol
Exact mass: 325.13075664 Da
Topological polar surface area: 215.0 Å²
Hydrogen-bond donors: 6
Hydrogen-bond acceptors: 10
Covalent units: 2
Defined stereocentres: 2

Also known as

carbocysteine lysine1D1Y95PXXARefChem:1088215256-425-9L-Lysine S-(carboxymethyl)-L-cysteine(R)-2-Amino-3-((carboxymethyl)thio)propanoic acid compound with (S)-2,6-diaminohexanoic acid (1:1)UNII-1D1Y95PXXAEINECS 256-425-9

11 more reported names

L-Lysine, compound with S-(carboxymethyl)-L-cysteine (1:1)LYSINE CARBOXYMETHYL CYSTEINATECARBOCISTEINE LYSINELYSINE CARBOCYSTEINATE(2R)-2-amino-3-[(carboxymethyl)sulfanyl]propanoic acid; (2S)-2,6-diaminohexanoic acidS-Carboxymethyl-L-cysteine lysinateCARBOCISTEINE LYSINE [MART.]CARBOCISTEINE LYSINE [WHO-DD](R)-2-Amino-3-((carboxymethyl)thio)propanoic acid,(S)-2,6-diaminohexanoic acidS-(Carboxymethyl)cysteine--lysine (1/1)S-(Carboxymethyl)-L-cysteine--L-lysine (1/1)

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External database identifiers

EPA DTXSID:DTXSID60964336

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 79458-68-7

CAS 79458-68-7PubChem CID 157297

Einecs 279-164-2

IUPAC name: (2R)-2-amino-3-(carboxymethylsulfanyl)propanoic acid;2,6-diaminohexanoic acid

Molecular formula: C11H23N3O6S
Molecular weight: 325.38 g/mol
Exact mass: 325.13075664 Da
Topological polar surface area: 215.0 Å²
Hydrogen-bond donors: 6
Hydrogen-bond acceptors: 10
Covalent units: 2
Defined stereocentres: 1

Also known as

DL-Lysine, compound with S-(carboxymethyl)-L-cysteine (1:1)

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

EPA DTXSID:DTXSID301021525

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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