3-[[4,5-Dihydro-3-methyl-5-oxo-1-(4-sulfophenyl)-1H-pyrazol-4-yl]azo]benzenesulfonic acid

3-[[4,5-二氢-3-甲基-5-氧代-1-(4-磺酸苯基)-1H-吡唑]氮杂]苯磺酸

Also known as: Benzenesulfonic acid, 3-[2-[4,5-dihydro-3-methyl-5-oxo-1-(4-sulfophenyl)-1H-pyrazol-4-yl]diazenyl]-, 3-[[3-Methyl-5-oxo-1-(4-sulfophenyl)-4H-pyrazol-4-yl]diazenyl]benzenesulfonic acid, 3-{(E)-[3-Methyl-5-oxo-1-(4-sulfophenyl)-4,5-dihydro-1H-pyrazol-4-yl]diazenyl}benzene-1-sulfonic acid

3-[[4,5-Dihydro-3-methyl-5-oxo-1-(4-sulfophenyl)-1H-pyrazol-4-yl]azo]benzenesulfonic acid (CAS 181819-97-6) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C16H14N4O7S2 and a molecular weight of 438.43500 g/mol. It is also known as Benzenesulfonic acid, 3-[2-[4,5-dihydro-3-methyl-5-oxo-1-(4-sulfophenyl)-1H-pyrazol-4-yl]diazenyl]-, 3-[[3-Methyl-5-oxo-1-(4-sulfophenyl)-4H-pyrazol-4-yl]diazenyl]benzenesulfonic acid and 3-{(E)-[3-Methyl-5-oxo-1-(4-sulfophenyl)-4,5-dihydro-1H-pyrazol-4-yl]diazenyl}benzene-1-sulfonic acid. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

181819-97-6

Jingsj CID

J-1061218-9

Molecular Formula

C₁₆H₁₄N₄O₇S₂

Chinese Name

3-[[4,5-二氢-3-甲基-5-氧代-1-(4-磺酸苯基)-1H-吡唑]氮杂]苯磺酸

Molecular Weight

438.43500 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026