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CAS 4810-50-8

CAS 4810-50-8 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 4810-50-8
CAS 4810-50-8PubChem CID 23684897

Potassium pidolate

The CIR Expert Panel concluded that PCA (i.e., 2-pyrrolidone-5-carboxylic acid), calcium PCA, magnesium PCA, potassium PCA, and sodium PCA are safe in cosmetics in the present practices of use and concentration described in this safety assessment. PCA and its salts should not be used in cosmetic products in which N-nitroso compounds can be formed. — Cosmetic Ingredient Review (CIR)

IUPAC name
potassium (2S)-5-oxopyrrolidine-2-carboxylate
Molecular formula
C5H6KNO3
Molecular weight
167.20 g/mol
Exact mass
166.99847454 Da
Topological polar surface area
69.2 Ų
Hydrogen-bond donors
1
Hydrogen-bond acceptors
3
Covalent units
2
Defined stereocentres
1

Also known as

Potassium 5-oxo-L-prolinatePotassium PCAKALIDONEEINECS 225-373-9H004M3556QL-Proline, 5-oxo-, monopotassium saltPOTASSIUM L-PYROGLUTAMATEPOTASSIUM PIDOLATE [WHO-DD]
12 more reported names
PROLINE, 5-OXO-, POTASSIUM SALT, L-POTASSIUM (S)-2-PYRROLIDONE-5-CARBOXYLATEL-PROLINE, 5-OXO-, POTASSIUM SALT (1:1)(S)-PYRROLIDONE-5-CARBOXYLIC ACID POTASSIUM SALTRefChem:867986POTASSIUM PCA [INCI]225-373-9potassium;(2S)-5-oxopyrrolidine-2-carboxylatePotassium (S)-5-oxopyrrolidine-2-carboxylateUNII-H004M3556Qpotassium pyroglutamatePotassium(S)-5-oxopyrrolidine-2-carboxylate
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.

Records for CAS 4810-50-8

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How CAS 4810-50-8 is used on this site

CAS 4810-50-8 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 4810-50-8 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.