2,2-Dimethyl-4-phenyl-2H-imidazole-1-oxide

2,2-二甲基-4-苯基-2H-咪唑-1-氧化物

Also known as: DMPIO, 2,2-DIMETHYL-4-PHENYL-2H-IMIDAZOLE-1-OXIDE, 2,2-dimethyl-1-oxido-4-phenylimidazol-1-ium, 2H-Imidazole, 2,2-dimethyl-4-phenyl-, 1-oxide, 2,2-dimethyl-4-phenyl-2H-imidazole 1-oxide

2,2-Dimethyl-4-phenyl-2H-imidazole-1-oxide (CAS 123557-86-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H12N2O and a molecular weight of 188.22600 g/mol. It is also known as DMPIO, 2,2-DIMETHYL-4-PHENYL-2H-IMIDAZOLE-1-OXIDE and 2,2-dimethyl-1-oxido-4-phenylimidazol-1-ium. Key properties include a melting point of 108-111ºC, a boiling point of 306.7ºC at 760mmHg, a density of 1.11g/cm3 and a flash point of 139.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

123557-86-8

Jingsj CID

J-20584-9

Molecular Formula

C₁₁H₁₂N₂O

Chinese Name

2,2-二甲基-4-苯基-2H-咪唑-1-氧化物

Molecular Weight

188.22600 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026