Official EU label nameGlossary entry 2254

ARGININE PCA

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:56265-06-664855-91-0

EC:260-081-5265-253-3

Ingredient index records:

ARGININE PCA

Cosmetic functions: HUMECTANT, SKIN CONDITIONING

5-oxo-L-proline, compound with L-arginine (1:1)

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1 matched or reported name

ARGININE PCA

Regulatory evidence across markets

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

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 56265-06-6

CAS 56265-06-6PubChem CID 198346

Arginine PCA

IUPAC name: (2S)-2-amino-5-(diaminomethylideneamino)pentanoic acid;(2S)-5-oxopyrrolidine-2-carboxylic acid

Molecular formula: C11H21N5O5
Molecular weight: 303.32 g/mol
Exact mass: 303.15426879 Da
Topological polar surface area: 194.0 Å²
Hydrogen-bond donors: 6
Hydrogen-bond acceptors: 7
Covalent units: 2
Defined stereocentres: 2

Also known as

Arginine pidolateAdiuvantEINECS 260-081-5ARGIDONE808T94CEU65-Oxo-L-proline, compound with L-arginine (1:1)ARGININE L-PYROGLUTAMATEL-ARGININE L-2 PYRROLIDONE-5-CARBOXYLATE

16 more reported names

RefChem:559943ARGININE PCA [INCI]L-arginine L-2-pyrrolidone-5-carboxylateL-Arginine-L-pyroglutamateL-Arginine L-Pyroglutamate5-Oxo-L-proline L-arginine saltC11H21N5O5Arginina pidolatoArginina pidolato [Spanish]UNII-808T94CEU65-oxo-Pro-OH H-Arg-OH salt5-Oxo-L-proline--L-arginine (1/1)ARGININE PYROGLUTAMATE [WHO-DD]AS-46926CS-0187166L-Arginine-L-pyroglutamate (H-L-Arg-OH.H-L-Pyr-OH)

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External database identifiers

EPA DTXSID:DTXSID50971695

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 64855-91-0

CAS 64855-91-0PubChem CID 6454976

Pyrglutargine

IUPAC name: (2S)-2-amino-5-(diaminomethylideneamino)pentanoic acid;5-oxopyrrolidine-2-carboxylic acid

Molecular formula: C11H21N5O5
Molecular weight: 303.32 g/mol
Exact mass: 303.15426879 Da
Topological polar surface area: 194.0 Å²
Hydrogen-bond donors: 6
Hydrogen-bond acceptors: 7
Covalent units: 2
Defined stereocentres: 1

Also known as

Arginine pyroglutamateVYI1WK838BRefChem:1097252PirglutarginaUNII-VYI1WK838BEINECS 265-253-35-Oxo-DL-proline, compound with L-arginine (1:1)G-278

8 more reported names

C11H21N5O5PIRGLUTARGINEPIRGLUTARGINE [MART.]PIRGLUTARGINE [WHO-DD]L-ARGININE DL-PYROGLUTAMATEAS-12651N~5~-(Diaminomethylidene)-L-ornithine--5-oxoproline (1/1)(2S)-2-amino-5-guanidino-pentanoic acid;5-oxopyrrolidine-2-carboxylic acid

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External database identifiers

EPA DTXSID:DTXSID90215141

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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