2-ethynyl-5-methylpyridine 1-oxide

2-炔基-5-甲基吡啶氮氧化物

Also known as: 2-ethynyl-5-methyl-1-oxidopyridin-1-ium, 2-ethynyl-5-methyl-1-oxidanidyl-pyridin-1-ium, 2-ethynyl-5-methyl-1$l^{5}-pyridin-1-one, Pyridine, 2-ethynyl-5-methyl-, 1-oxide, Pyridine, 2-ethynyl-5-methyl-, 1-oxide (9CI), 2-ETHYNYL-5-METHYLPYRIDINE 1-OXIDE

2-ethynyl-5-methylpyridine 1-oxide (CAS 499187-53-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H7NO and a molecular weight of 133.14700 g/mol. It is also known as 2-ethynyl-5-methyl-1-oxidopyridin-1-ium, 2-ethynyl-5-methyl-1-oxidanidyl-pyridin-1-ium and 2-ethynyl-5-methyl-1$l^{5}-pyridin-1-one. Key properties include a boiling point of 313.691ºC at 760 mmHg, a density of 0.958g/cm3 and a flash point of 143.516ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

499187-53-0

Jingsj CID

J-1014848-6

Molecular Formula

C₈H₇NO

Chinese Name

2-炔基-5-甲基吡啶氮氧化物

Molecular Weight

133.14700 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026