C8H6O5
182.13 g/mol
Pharmaceutical IntermediateWarning
4-Hydroxyphthalic acid
CAS610-35-5EC210-221-6
Category
Pharmaceutical Intermediate
Compound Class
Organic Acid
Primary Use
Pharmaceutical Intermediate
4-Hydroxyphthalic acid is a hydroxybenzoic acid and a phenol, derived from phthalic acid by substitution of a hydrogen atom with a hydroxy group at the 4-position. It is primarily used as a compound in pharmaceutical manufacturing.
pharmaceutical intermediate
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
ReferenceSame Category
4-amino-3-nitrophenol
CAS610-81-1
pharmaceutical intermediate
ReferenceSame Category
Methyl 2-iodobenzoate
CAS610-97-9
pharmaceutical intermediate
ReferenceSame Category
Norclozapine
CAS6104-71-8
pharmaceutical intermediate
ReferenceSame Category
4-Chloro-2-fluorobenzaldehyde
CAS61072-56-8
pharmaceutical intermediate
Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for 4-Hydroxyphthalic acid (CAS 610-35-5) is 2918.29.
HS code (international, 6-digit)
2918.29
EU CN code (8-digit)
2918 29 00
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-hydroxyphthalic acid
InChIKey
MWRVRCAFWBBXTL-UHFFFAOYSA-N
SMILES
C1=CC(=C(C=C1O)C(=O)O)C(=O)O
Synonyms (8)
- GJS
- 3,4-Dicarboxyphenol
- 4-Hydroxyphthalic acid
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