1-Methyl-3-n-propyl-2-pyrazolin-5-one

1-甲基-3-正-丙基-2-吡唑啉-5-酮

Also known as: 1-Methyl-3-propyl-4,5-dihydro-1H-pyrazol-5-one, 2-Methyl-5-propyl-2,4-dihydro-3H-pyrazol-3-one, 1-methyl-3-propyl-1H-pyrazol-5(4H)-one, 2-methyl-5-propyl-4H-pyrazol-3-one, 1-Methyl-3-propyl-5-pyrazolon, 1-Methyl-3-n-propyl-2-pyrazolin-5-on, MFCD00051849

1-Methyl-3-n-propyl-2-pyrazolin-5-one (CAS 31272-04-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H12N2O and a molecular weight of 140.18300 g/mol. It is also known as 1-Methyl-3-propyl-4,5-dihydro-1H-pyrazol-5-one, 2-Methyl-5-propyl-2,4-dihydro-3H-pyrazol-3-one and 1-methyl-3-propyl-1H-pyrazol-5(4H)-one. Key properties include a melting point of 114-116°C, a boiling point of 194.9ºC at 760 mmHg, a density of 1.09g/cm3 and a flash point of 71.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

31272-04-5

Jingsj CID

J-35471-0

Molecular Formula

C₇H₁₂N₂O

Chinese Name

1-甲基-3-正-丙基-2-吡唑啉-5-酮

Molecular Weight

140.18300 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026