C8H7NO2
149.15 g/mol
Pharmaceutical IntermediateDanger
5-Aminophthalide
CAS65399-05-5EC265-731-1
Category
Pharmaceutical Intermediate
Compound Class
Heterocycle
Primary Use
Pharmaceutical Intermediate
5-Aminophthalide is a crystalline compound with the structure of an amino-substituted isobenzofuranone. Its crystal structure was determined and reported in Acta Crystallographica Section E, confirming its molecular geometry.
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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Safety Reference
Danger
H301Toxic if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
H412Harmful to aquatic life with long lasting effects
Customs Tariff Classification
The international HS code for 5-Aminophthalide (CAS 65399-05-5) 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
5-amino-3H-2-benzofuran-1-one
InChIKey
ISMUWQMUWFPFBZ-UHFFFAOYSA-N
SMILES
C1C2=C(C=CC(=C2)N)C(=O)O1
Synonyms (13)
- 5-Aminophenyl Phthalein
- 5-Aminophthalide
- 5-amino-3H-2-benzofuran-1-one
- Roxadustat Impurity 91
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