1-Methyl-4-nitro-3-propyl-1H-pyrazole-5-carboxylic acid

1-甲基-4-硝基-3-丙基-1H-吡唑-5-羧酸

Also known as: 1-Methyl-4-nitro-3-propyl-1H-pyrazole-5-carboxylic acid, Sildenafil Impurity NA, Methisosildenafil Impurity 15, PYR245, 1-Methyl-4-nitro-3-n-propyl pyrazole-5-carboxylic acid

1-Methyl-4-nitro-3-propyl-1H-pyrazole-5-carboxylic acid (CAS 139756-00-6) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H11N3O4 and a molecular weight of 213.19100 g/mol. It is also known as Sildenafil Impurity NA, Methisosildenafil Impurity 15 and PYR245. Key properties include a melting point of 124-127°C(lit.), a boiling point of 392.7ºC at 760mmHg, a density of 1.45g/cm3 and a flash point of 191.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

139756-00-6

Jingsj CID

J-1577609-5

Molecular Formula

C₈H₁₁N₃O₄

Chinese Name

1-甲基-4-硝基-3-丙基-1H-吡唑-5-羧酸

Molecular Weight

213.19100 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026