3-(3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonic acid

3-(3-甲基-5-氧代-4,5-二氢-1H-吡唑-1-基)苯磺酸

Also known as: 1-(3-Sulfophenyl)-3-methyl-5-pyrazolone, 1-(3-Sulfophenyl)-3-methyl-2-pyrazolin-5-one, 1-(M-SULFOPHENYL)-3-METHYL-5-PYRAZOLONE, 3-(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)benzenesulfonic acid, 3-(5-keto-3-methyl-4H-pyrazol-1-yl)benzenesulfonic acid, 3-Methyl-1-(3-sulfophenyl)-2-pyrazolin-5-one, Benzenesulfonic acid, 3-(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)-, Benzenesulfonic acid,m-(3-methyl-5-oxo-2-pyrazolin-1-yl), m-(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)benzenesulfonic acid

3-(3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonic acid (CAS 119-17-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H10N2O4S and a molecular weight of 254.26200 g/mol. It is also known as 1-(3-Sulfophenyl)-3-methyl-5-pyrazolone, 1-(3-Sulfophenyl)-3-methyl-2-pyrazolin-5-one and 1-(M-SULFOPHENYL)-3-METHYL-5-PYRAZOLONE. Key properties include a melting point of 335 °C(lit.) and a density of 1.53 g/cm3. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

119-17-5

Jingsj CID

J-1993258-7

Molecular Formula

C₁₀H₁₀N₂O₄S

Chinese Name

3-(3-甲基-5-氧代-4,5-二氢-1H-吡唑-1-基)苯磺酸

Molecular Weight

254.26200 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026