C13H16O2
204.26 g/mol
Pharmaceutical IntermediateWarning
2-cyclopentyl-2-phenylacetic acid
CAS3900-93-4EC223-454-3
Category
Pharmaceutical Intermediate
Compound Class
Organic Acid
Primary Use
Pharmaceutical Intermediate
2-Cyclopentyl-2-phenylacetic acid is a chemical compound recognized as a metabolite of cyclotropium. It is used as a pharmaceutical intermediate in research and manufacturing processes.
Pharmaceutical intermediate for researchMetabolite reference standard
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
StrongStructure SimilarSimilarity 0.96
Cyclohexylphenylacetic acid
CAS3894-09-5
Research compound for organic synthesis
ReferenceSame Category
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pharmaceutical intermediate
ReferenceSame Category
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pharmaceutical intermediate
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pharmaceutical intermediate
ReferenceSame Category
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pharmaceutical intermediate
Referencesame scaffold
Α-cyclopentylmandelic acid
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Referencesame scaffold
Cyclopentolate hydrochloride
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Referencesame scaffold
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pharmaceutical raw material
Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for 2-cyclopentyl-2-phenylacetic acid (CAS 3900-93-4) is 2916.39.
HS code (international, 6-digit)
2916.39
EU CN code (8-digit)
2916 39 90
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
2-cyclopentyl-2-phenylacetic acid
InChIKey
BCJIDGDYYYBNNB-UHFFFAOYSA-N
SMILES
C1CCC(C1)C(C2=CC=CC=C2)C(=O)O
Synonyms (15)
- (2RS)-2-Cyclopentyl-2-phenylacetic Acid; Glycopyrronium Bromide Imp. K (EP); Glycopyrronium Bromide Impurity K; Glycopyrronium Impurity K
- Glycopyrronium Bromide EP Impurity K
- Cyclopentylphenylacetic acid
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