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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 70733Generated: October 23, 2026

2,4-Dimethylpyridine 1-oxide

2,4-Lutidine N-Oxide · 2,4-Dimethylpyridine N-Oxide · 2,4-Dimethyl-pyridine 1-oxide · Pyridine,2,4-dimethyl-, 1-oxide · 2,4-dimethyl-1-oxidopyridin-1-ium

https://huagongshe.com/en/chemical/70733

2,4-Dimethylpyridine 1-oxide molecular structure

Identifiers & Physical Properties

CAS No.1122-45-8
Molecular formulaC7H9NO
Average molar mass123.15 g/mol
Monoisotopic mass123.06841391 g/mol
SMILESCc1cc[n+]([O-])c(C)c1
InChIKeyKMQVCYOPBMKRKH-UHFFFAOYSA-N
PubChem CID70733
EC No.214-349-3
DTXSIDDTXSID00149948

Chemical & Physical Properties

XLogP0.6
Topological polar surface area25.5
Hydrogen bond donors0
Hydrogen bond acceptors1
Rotatable bonds0
Heavy atoms9
Formal charge0
Complexity94.9
Boiling point122-123 °C(Press: 0.01 Torr)
Density1.00±0.1 g/cm3(Predicted)
pKa (acidity coefficient)pK1:1.627(+1) (25°C)
FDA UNII978DN6CD4N
GHS pictogramGHS07,GHS05
Signal wordDanger
GHS hazard statementsH335-H315-H302-H318
GHS precautionary statementsP264-P270-P301+P312-P330-P501-P264-P280-P302+P352-P321-P332+P313-P362-P280-P305+P351+P338-P310

Safety & Regulations

GHS classificationDangerH302 (97.5%): Harmful if swallowed [Warning Acute toxicity, oral]P261, P264, P264+P265, P270, P271, P280, P301+P317, P302+P352, P304+P340, P305+P354+P338, P317, P319, P321, P330, P332+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 40 reports by companies from 3 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Hazard Classes and CategoriesAcute Tox. 4 (97.5%)
Signal wordDanger
GHS pictogramGHS07,GHS05
GHS hazard statementsH335-H315-H302-H318
GHS precautionary statementsP264-P270-P301+P312-P330-P501-P264-P280-P302+P352-P321-P332+P313-P362-P280-P305+P351+P338-P310