C8H3NO5
193.11 g/mol
Industrial ChemicalWarning
3-Nitrophthalic anhydride
CAS641-70-3EC211-373-6
Category
Industrial Chemical
Compound Class
Aromatic
Primary Use
Synthesis of pharmaceuticals and fine chemicals
3-Nitrophthalic anhydride is an organic compound that serves as a key intermediate in the synthesis of pharmaceuticals and fine chemicals. It is characterized by a nitro-substituted phthalic anhydride structure, making it valuable for constructing complex molecular architectures.
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
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for 3-Nitrophthalic anhydride (CAS 641-70-3) is 2917.39.
HS code (international, 6-digit)
2917.39
EU CN code (8-digit)
2917 39 85
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
4-nitro-2-benzofuran-1,3-dione
InChIKey
ROFZMKDROVBLNY-UHFFFAOYSA-N
SMILES
C1=CC2=C(C(=C1)[N+](=O)[O-])C(=O)OC2=O
Synonyms (16)
- 3-Nitrophthalic anhydride
- 3-nitro-phtalic anhydride
- 3-nitrophtalic acid anhydride
- Phthalic anhydride, 3-nitro-
- nitrophthalic anhydride
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