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Home/Compounds/Pharmaceutical Intermediate/3-[(4-Chlorophenyl)methylidene]-2-benzofuran-1(3H)-one
C15H9ClO2
256.68 g/mol
Pharmaceutical Intermediate

3-(4-chlorobenzylidene)isobenzofuran-1(3H)-one

CAS20526-97-0EC243-862-5
Category
Pharmaceutical Intermediate
Compound Class
Ester
Primary Use
Pharmaceutical Intermediate

This compound is a chlorinated benzofuranone derivative used as an intermediate in pharmaceutical synthesis. Its structure features an aromatic ring system with an ester and a halogen substituent.

Pharmaceutical intermediate for synthesis

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

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Referencesame scaffold

2-Fluoro-5-[(3-oxo-1(3H)-isobenzofuranylidene)methyl]benzonitrile

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Customs Tariff Classification

The international HS code for 3-(4-chlorobenzylidene)isobenzofuran-1(3H)-one (CAS 20526-97-0) is 2932.20.

HS code (international, 6-digit)

2932.20

EU CN code (8-digit)

2932 20 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

3-[(4-chlorophenyl)methylidene]-2-benzofuran-1-one

InChIKey

OHRFHJYUEWVXBD-UHFFFAOYSA-N

SMILES

C1=CC=C2C(=C1)C(=CC3=CC=C(C=C3)Cl)OC2=O

Synonyms (10)
  • Azelastine EP Impurity E
  • 3-(4-Chlorobenzal)phthalide
  • 4-CHLOROBENZYLIDENE PHTHALIDE

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