C6H5NO3
139.11 g/mol
APIWarning
Nicotinic acid N-oxide
CAS2398-81-4EC219-265-0
Category
API
Compound Class
Heterocycle
Primary Use
Pharmaceutical Raw Material
Nicotinic acid N-oxide is a chemical compound used as a pharmaceutical raw material. It is structurally an N-oxidized derivative of nicotinic acid, featuring a carboxylic acid group and an aromatic heterocyclic ring.
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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Referencestereoisomer of
Nicotinic acid, magnesium salt, 1-oxide
CAS7558-87-4
Magnesium salt of nicotinic acid N-oxide
Safety Reference
Warning
H302Harmful if swallowed
H312Harmful in contact with skin
H315Causes skin irritation
H319Causes serious eye irritation
H332Harmful if inhaled
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for Nicotinic acid N-oxide (CAS 2398-81-4) 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
1-oxidopyridin-1-ium-3-carboxylic acid
InChIKey
FJCFFCXMEXZEIM-UHFFFAOYSA-N
SMILES
C1=CC(=C[N+](=C1)[O-])C(=O)O
Synonyms (25)
- Acide oxiniacique [INN-French]
- Acido oxiniacico [INN-Spanish]
- Acidum oxiniacicum [INN-Latin]
- 3-Carboxypyridine 1-oxide
- 3-Carboxypyridine N-oxide
- 3-Pyridylcarboxylate N-oxide
- Acide oxiniacique
- Acido oxiniacico
- Acidum oxiniacicum
- N-Hydroxynicotinic acid
- Nicotinic acid 1-oxide
- Nicotinic acid N-oxide
- Nicotinic acid oxide
- Oxiniacic acid
- pyridine, 1-oxide, 3-carboxy-
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