Pyrazolo[1,5-a][1,3,5]triazin-4(3H)-one

吡唑并[1,5-a][1,3,5]三嗪-4(3H)-酮

Also known as: 4-oxo-3H-pyrazolo[1,5-a]1,3,5-triazine, 1H,4H-pyrazolo[1,5-a][1,3,5]triazin-4-one, Pyrazolo[1,5-a][1,3,5]triazin-4(1H)-one, 6H-pyrazolo[1,5-a][1,3,5]triazin-4-one, 4-Oxo-3H-pyrazolo<1,5-a>-1,3,5-triazin

Pyrazolo[1,5-a][1,3,5]triazin-4(3H)-one (CAS 54346-27-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H4N4O and a molecular weight of 136.111 g/mol. It is also known as 4-oxo-3H-pyrazolo[1,5-a]1,3,5-triazine, 1H,4H-pyrazolo[1,5-a][1,3,5]triazin-4-one and Pyrazolo[1,5-a][1,3,5]triazin-4(1H)-one. Key properties include a boiling point of 234.7ºC at 760 mmHg, a density of 1.7±0.1 g/cm3 and a flash point of 95.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

54346-27-9

Jingsj CID

J-1558339-4

Molecular Formula

C₅H₄N₄O

Chinese Name

吡唑并[1,5-a][1,3,5]三嗪-4(3H)-酮

Molecular Weight

136.111 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026