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CAS 31377-05-6

CAS 31377-05-6 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 31377-05-6
CAS 31377-05-6PubChem CID 14559044

Calcium 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
calcium bis((2S)-5-oxopyrrolidine-2-carboxylate)
Molecular formula
C10H12CaN2O6
Molecular weight
296.29 g/mol
Exact mass
296.0321270 Da
Topological polar surface area
138.0 Ų
Hydrogen-bond donors
2
Hydrogen-bond acceptors
6
Covalent units
3
Defined stereocentres
2

Also known as

Efical7Y2LVU5EKKCALCIDONECALCIUM PCARefChem:122896250-602-4Calcium (S)-5-oxopyrrolidine-2-carboxylatecalcium;(2S)-5-oxopyrrolidine-2-carboxylate
15 more reported names
Calcium bis(5-oxo-L-prolinate)UNII-7Y2LVU5EKKEINECS 250-602-4Ibercal (TN)CALCIUM OXOPROLINEL-CALCIUM PIDOLATECALCIUM L-PYROGLUTAMATECALCIUM PIDOLATE [MART.]CALCIUM PIDOLATE [WHO-DD]5-OXO-L-PROLINE CALCIUM SALTPIDOLIC ACID CALCIUM SALT (2:1)Calcium bis[(2S)-5-oxopyrrolidine-2-carboxylate]L-PROLINE, 5-OXO-, CALCIUM SALT (2:1)L-PYRROLIDONE CARBOXYLIC ACID, CALCIUM SALTPROLINE, 5-OXO-, CALCIUM SALT (2:1), L-
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 31377-05-6

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How CAS 31377-05-6 is used on this site

CAS 31377-05-6 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 31377-05-6 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.