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CAS 138506-45-3

CAS 138506-45-3 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 138506-45-3
CAS 138506-45-3PubChem CID 3047843

Pidobenzone

Pidobenzone is a small molecule drug. The usage of the INN stem '-zone' in the name indicates that Pidobenzone is a anti-inflammatory analgesic, phenylbutazone derivative. Pidobenzone has a monoisotopic molecular weight of 221.07 Da. — DrugBank

IUPAC name
(4-hydroxyphenyl) (2S)-5-oxopyrrolidine-2-carboxylate
Molecular formula
C11H11NO4
Molecular weight
221.21 g/mol
Exact mass
221.06880783 Da
XLogP3
0.8
Topological polar surface area
75.6 Ų
Hydrogen-bond donors
2
Hydrogen-bond acceptors
4
Covalent units
1
Defined stereocentres
1

Also known as

pidobenzonaK5 lipogelX7D2GSX1C1pidobenzonumRefChem:174209L-Proline, 5-oxo-, 4-hydroxyphenyl esterPidobenzone [INN]5-oxo-L-Proline 4-Hydroxyphenyl Ester
10 more reported names
5-Oxo-L-proline,p-hydroxyphenyl esterUNII-X7D2GSX1C1PIDOBENZONE [WHO-DD]4-hydroxyphenyl (2S)-5-oxopyrrolidine-2-carboxylateSDJPNDMWNUPUFI-VIFPVBQESA-N4-Hydroxyphenyl 5-oxo-L-prolinateHY-W7109545-Oxo-L-proline, p-hydroxyphenyl ester4-HYDROXYPHENOL (L)-PYROGLUTAMATEPidobenzone (p-Hydroxyphenyl 5-Oxo-L-Proline Ester)
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 138506-45-3

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How CAS 138506-45-3 is used on this site

CAS 138506-45-3 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 138506-45-3 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.