4-Isothiocyanato-1,5-dimethyl-2-phenyl-1,2-dihydro-pyrazol-3-one

4-异硫氰酸-1,5-二甲基-2-苯基-1,2-二氢吡唑-3-酮

Also known as: 4-Isothiocyanato-1,5-dimethyl-2-phenyl-2,3-dihydro-1H-pyrazol-3-one, 4-Isothiocyanato-1,5-dimethyl-2-phenyl-1,2-dihydro-pyrazol-3-on, 4-Isothiocyanato-1,5-dimethyl-2-phenylpyrazol-3-one, 4-Isothiocyanato-2,3-dimethyl-1-phenyl-1,2-dihydropyrazol-5-one, 4-Isothiocyanatoantipyrine, 4-Antipyrinyl isothiocyanate, 1-Phenyl-2,3-dimethyl-pyrazolon-(5)-yl-(4)-isothiocyanat, 1-Phenyl-2.3-dimethylpyrazolon-(5)-4-isothiocyanat, HMS1782F17

4-Isothiocyanato-1,5-dimethyl-2-phenyl-1,2-dihydro-pyrazol-3-one (CAS 91397-03-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C12H11N3OS and a molecular weight of 245.30000 g/mol. It is also known as 4-Isothiocyanato-1,5-dimethyl-2-phenyl-2,3-dihydro-1H-pyrazol-3-one, 4-Isothiocyanato-1,5-dimethyl-2-phenyl-1,2-dihydro-pyrazol-3-on and 4-Isothiocyanato-1,5-dimethyl-2-phenylpyrazol-3-one. Key properties include a boiling point of 366.4ºC at 760 mmHg, a density of 1.23g/cm3 and a flash point of 175.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

91397-03-4

Jingsj CID

J-1502534-0

Molecular Formula

C₁₂H₁₁N₃OS

Chinese Name

4-异硫氰酸-1,5-二甲基-2-苯基-1,2-二氢吡唑-3-酮

Molecular Weight

245.30000 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026