C5H4N2O3
140.1 g/mol
Pharmaceutical IntermediateWarning
4-Hydroxy-3-nitropyridine
CAS5435-54-1EC611-127-1
Category
Pharmaceutical Intermediate
Compound Class
Heterocycle
Primary Use
Pharmaceutical Intermediate
4-Hydroxy-3-nitropyridine is a chemical compound used as a pharmaceutical intermediate. It features a pyridine ring with both hydroxyl and nitro substituents, giving it moderate polarity and a single hydrogen bond donor.
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
StrongSame Parent
4-Hydroxy-3-nitropyridine
CAS15590-90-6
synthetic intermediate for pharmaceuticals and agrochemicals
ReferenceSame Category
2-amino-2-phenylbutyric acid
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pharmaceutical intermediate
ReferenceSame Category
2-nitro-4-(propylthio)aniline
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pharmaceutical intermediate
ReferenceSame Category
2-methyl-3-(trifluoromethyl)aniline
CAS54396-44-0
pharmaceutical intermediate
ReferenceSame Category
Cyclohepta-1,3,5-triene
CAS544-25-2
pharmaceutical intermediate
Referencesame scaffold
4-hydroxypyridine
CAS626-64-2
Chemical intermediate for synthesis
Referencesame scaffold
3-Amino-4-hydroxypyridine
CAS6320-39-4
Heterocyclic research compound
Referencesame scaffold
4-Hydroxy-3,5-diiodopyridine
CAS7153-08-4
pharmaceutical raw material
Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for 4-Hydroxy-3-nitropyridine (CAS 5435-54-1) 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
3-nitro-1H-pyridin-4-one
InChIKey
YUWOLBZMQDGRFV-UHFFFAOYSA-N
SMILES
C1=CNC=C(C1=O)[N+](=O)[O-]
Synonyms (15)
- 3-Nitro-1H-pyridin-4-one
- 3-Nitro-4-hydroxypyridine
- 3-Nitro-4-pyridinol
- 3-Nitro-4-pyridol
- 3-Nitro-4-pyridone
- 3-Nitropyridin-4(1H)-one
- 3-nitro-4(1H)-pyridinone
- 3-nitro-4-oxypyridine
- 3-nitropyridin-4-ol
- 4(1H)-Pyridinone, 3-nitro-
- 4-Hydroxy-3-nitropyridine
- 4-PYRIDINOL, 3-NITRO-
- 4-hydroxy-3-nitropytidine
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