C7H5NO4
167.12 g/mol
Pharmaceutical IntermediateWarning
Pyridine-3,4-dicarboxylic acid
CAS490-11-9EC207-705-4
Category
Pharmaceutical Intermediate
Compound Class
Organic Acid
Primary Use
Pharmaceutical Intermediate
Pyridine-3,4-dicarboxylic acid is one of several isomeric pyridinedicarboxylic acids. It is primarily utilized in the synthesis of pharmaceutical compounds as a building block in organic chemistry.
pharmaceutical intermediatebuilding block for organic 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
ReferenceSame Category
2,4,5-Trimethoxybenzoic acid
CAS490-64-2
pharmaceutical intermediate
ReferenceSame Category
Chromone
CAS491-38-3
pharmaceutical intermediate
ReferenceSame Category
Doripenem side-chain
CAS491878-06-9
pharmaceutical intermediate
ReferenceSame Category
2-C-Methyl-D-ribono-1,4-lactone
CAS492-30-8
pharmaceutical intermediate
Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for Pyridine-3,4-dicarboxylic acid (CAS 490-11-9) is 2933.39.
HS code (international, 6-digit)
2933.39
EU CN code (8-digit)
2933 39 99
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
pyridine-3,4-dicarboxylic acid
InChIKey
MUYSADWCWFFZKR-UHFFFAOYSA-N
SMILES
C1=CN=CC(=C1C(=O)O)C(=O)O
Synonyms (9)
- 3,4-Pyridinedicarboxylic acid
- CINCHOMERONIC ACID
- Chinchomeronic acid
- Cinchomeronsaure
- pyridine carboxylate, 6e
- pyridine, 3,4-dicarboxy-
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