Picrolonic acid

苦酮酸

Also known as: 3-Methyl-4-nitro-1-(p-nitrophenyl)-2-pyrazolin-5-one, 2,4-Dihydro-5-methyl-4-nitro-2-(4-nitrophenyl)-3H-pyrazol-3-one, 5-Methyl-4-nitro-2-(4-nitrophenyl)-2,4-dihydro-3H-pyrazol-3-one, 1-(p-Nitrophenyl)-3-methyl-4-nitro-5-pyrazolone, 3-Methyl-4-nitro-1-(4-nitrophenyl)-1H-pyrazol-5(4H)-one, Picrolic acid, NSC 5049

Picrolonic acid (CAS 550-74-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C10H8N4O5 and a molecular weight of 264.194 g/mol. It is also known as 3-Methyl-4-nitro-1-(p-nitrophenyl)-2-pyrazolin-5-one, 2,4-Dihydro-5-methyl-4-nitro-2-(4-nitrophenyl)-3H-pyrazol-3-one and 5-Methyl-4-nitro-2-(4-nitrophenyl)-2,4-dihydro-3H-pyrazol-3-one. Key properties include a melting point of 119 °C, a boiling point of 548.8±50.0 °C at 760 mmHg, a density of 1.7±0.1 g/cm3 and a flash point of 285.7±30.1 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

550-74-3

Jingsj CID

J-1993598-4

Molecular Formula

C₁₀H₈N₄O₅

Chinese Name

苦酮酸

Molecular Weight

264.194 g/mol

Category

Organic Acids

Last updated

8/21/2026