1-(4-Sulfamidophenyl)-3-methyl-5-pyrazolone

1-(4-磺酰氨基苯基)-3-甲基-5-吡唑啉酮

Also known as: 3-Methyl-1-(4-sulfamidophenyl)-5-pyrazolone, 3-Methyl-1-(4-sulfamidophenyl)-2-pyrazolin-5-one, 4-(3-Methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonamide, p-(4,5-Dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)benzenesulfonamide, 1-(4'-Sulfamidophenyl)-3-methyl-5-pyrazolone, 4-(3-Methyl-5-oxo-2-pyrazolin-1-yl)benzenesulfonamide, 1-(4-(Aminosulfonyl)phenyl)-3-methyl-3-pyrazolin-5-one

1-(4-Sulfamidophenyl)-3-methyl-5-pyrazolone (CAS 13269-73-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H11N3O3S and a molecular weight of 253.27800 g/mol. It is also known as 3-Methyl-1-(4-sulfamidophenyl)-5-pyrazolone, 3-Methyl-1-(4-sulfamidophenyl)-2-pyrazolin-5-one and 4-(3-Methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonamide. Key properties include a melting point of 246-250ºC(lit.), a boiling point of 527.1ºC at 760 mmHg, a density of 1.52 g/cm3 and a flash point of 272.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

13269-73-3

Jingsj CID

J-17997-3

Molecular Formula

C₁₀H₁₁N₃O₃S

Chinese Name

1-(4-磺酰氨基苯基)-3-甲基-5-吡唑啉酮

Molecular Weight

253.27800 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026