1-Methyl-5-(trifluoromethyl)-1H-pyrazol-3-ol

3-羟基-1-甲基-5-三氟甲基-1H-吡唑

Also known as: 3-Hydroxy-1-methyl-5-(trifluoromethyl)pyrazole, 1-Methyl-5-(trifluoromethyl)-1,2-dihydro-3H-pyrazol-3-one, 1-Methyl-5-(trifluoromethyl)-1H-pyrazol-3(2H)-one, 3H-Pyrazol-3-one, 1,2-dihydro-1-methyl-5-(trifluoromethyl)-, MFCD00085094, TIMTEC-BB SBB000154

1-Methyl-5-(trifluoromethyl)-1H-pyrazol-3-ol (CAS 119022-51-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H5F3N2O and a molecular weight of 166.101 g/mol. It is also known as 3-Hydroxy-1-methyl-5-(trifluoromethyl)pyrazole, 1-Methyl-5-(trifluoromethyl)-1,2-dihydro-3H-pyrazol-3-one and 1-Methyl-5-(trifluoromethyl)-1H-pyrazol-3(2H)-one. Key properties include a melting point of 114-115 °C, a boiling point of 224.4ºC at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 89.5ºC. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

119022-51-4

Jingsj CID

J-39656-9

Molecular Formula

C₅H₅F₃N₂O

Chinese Name

3-羟基-1-甲基-5-三氟甲基-1H-吡唑

Molecular Weight

166.101 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026