1-(4'-Sulfophenyl)-3-carboxy-5-pyrazolone

1-(4'-磺酸苯基)-3-羧基-5-吡唑啉酮

Also known as: 1-(4-Sulfophenyl)-3-carboxy-5-pyrazolone, 5-Oxo-1-(4-sulfophenyl)-2-pyrazoline-3-carboxylic acid, 5-Oxo-1-(4-sulfophenyl)-4,5-dihydro-1H-pyrazole-3-carboxylic acid, 1-(4-Sulfophenyl)-5-oxo-4,5-dihydro-1H-pyrazole-3-carboxylic acid, SPCP, Pyrazolone T, 1H-Pyrazole-3-carboxylic acid, 4,5-dihydro-5-oxo-1-(4-sulfophenyl)-, EINECS 204-254-5, MFCD00020755

1-(4'-Sulfophenyl)-3-carboxy-5-pyrazolone (CAS 118-47-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H8N2O6S and a molecular weight of 284.245 g/mol. It is also known as 1-(4-Sulfophenyl)-3-carboxy-5-pyrazolone, 5-Oxo-1-(4-sulfophenyl)-2-pyrazoline-3-carboxylic acid and 5-Oxo-1-(4-sulfophenyl)-4,5-dihydro-1H-pyrazole-3-carboxylic acid. Key properties include a melting point of 260-270 and a density of 1.7±0.1 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

118-47-8

Jingsj CID

J-1993393-7

Molecular Formula

C₁₀H₈N₂O₆S

Chinese Name

1-(4'-磺酸苯基)-3-羧基-5-吡唑啉酮

Molecular Weight

284.245 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026