C5H5NO2
111.1 g/mol
OtherWarning
3-Hydroxypyridine N-oxide
CAS6602-28-4EC229-545-4
Category
Other
Compound Class
n.a
Primary Use
research reagent
3-Hydroxypyridine N-oxide is an aromatic heterocyclic compound featuring a hydroxyl group and an N-oxide moiety on a pyridine ring. It is a relatively polar, low molecular weight compound commonly used as an intermediate in organic synthesis and pharmaceutical research.
research compound for chemical synthesispharmaceutical 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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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
H351Suspected of causing cancer
Customs Tariff Classification
The international HS code for 3-Hydroxypyridine N-oxide (CAS 6602-28-4) 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-ol
InChIKey
YMEZKRMAPQIBQH-UHFFFAOYSA-N
SMILES
C1=CC(=C[N+](=C1)[O-])O
Synonyms (12)
- 1-Oxo-1lambda~5~-pyridin-3-ol
- 1-Oxopyridin-3-ol
- 1-oxidopyridin-1-ium-3-ol
- 3-Hydroxypyridine N-oxide
- 3-Hydroxypyridine-1-oxide
- 3-Hydroxypyridinium-1-olate
- 3-PYRIDINOL, 1-OXIDE
- 3-Pyridinol N-oxide
- Furosemide Impurity 74
- Pyridin-3-ol 1-oxide
- hydroxypyridine N-oxide
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