5-Formamido-1H-pyrazole-4-carboxamide

3-(甲酰氨基)-1H-吡唑-4-甲酰胺

Also known as: Allopurinol impurity B, Allopurinol Related Compound B, Allopurinol EP Imp B, Allopurinol EP Impurity B, Allopurinol USP Related Compound B, Allopurinol Impurity 2, 5-(Formylamino)-1H-pyrazole-4-carboxamide, 1H-Pyrazole-4-carboxamide, 5-(formylamino)-, 3-(Formylamino)-1H-pyrazole-4-carboxamide

5-Formamido-1H-pyrazole-4-carboxamide (CAS 22407-20-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H6N4O2 and a molecular weight of 154.127 g/mol. It is also known as Allopurinol impurity B, Allopurinol Related Compound B and Allopurinol EP Imp B. Key properties include a boiling point of 601.5±40.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 317.6±27.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

22407-20-1

Jingsj CID

J-1356523-5

Molecular Formula

C₅H₆N₄O₂

Chinese Name

3-(甲酰氨基)-1H-吡唑-4-甲酰胺

Molecular Weight

154.127 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026