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Home/Compounds/Industrial Chemical/4-methylpyridine N-oxide
C6H7NO
109.13 g/mol
Industrial ChemicalWarning

4-Picoline N-oxide

CAS1003-67-4EC213-712-3
Category
Industrial Chemical
Compound Class
Heterocycle
Primary Use
Chemical intermediate and research compound

4-Picoline N-oxide is a colorless solid and an isomer of picoline-N-oxide, related in properties to pyridine-N-oxide. It is primarily used as a chemical intermediate and research compound.

chemical intermediateresearch compound

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

Harmful
Harmful
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Customs Tariff Classification

The international HS code for 4-Picoline N-oxide (CAS 1003-67-4) 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

4-methyl-1-oxidopyridin-1-ium

InChIKey

IWYYIZOHWPCALJ-UHFFFAOYSA-N

SMILES

CC1=CC=[N+](C=C1)[O-]

Synonyms (15)
  • .GAMMA.-PICOLINE OXIDE
  • 4-METHYLPYRIDINE OXIDE
  • 4-Methylpyridine 1-oxide
  • 4-Methylpyridine N-oxide
  • 4-PICOLINE OXIDE
  • 4-Picoline 1-oxide
  • 4-Picoline N-oxide
  • 4-methyl-1-oxidopyridin-1-ium
  • 4-methylpyridin-1-ium-1-olate
  • 4Picoline, 1oxide (8CI)
  • Pyridine, 4-methyl-, 1-oxide
  • gammaPicoline 1oxide
  • gammaPicoline Noxide
  • pyridine, 1-oxide, 4-methyl-

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