Chemical Name: 4-(b-Isoamylenyl)-1,2-diphenyl-3,5-pyrazolidinedione
CAS: 30748-29-9
Structural formula:

Molecular formula: C₂₀H₂₀N₂O₂
Molecular weight: 320.39
Authentication code: Guo Yao Zhun Zi H37023357
Specification: National drug standard WS-10001-(HD-0432)-2002
Appearance: White or almost white crystal powder
Assay: Not less than 99.0%
Melting point: 152~157^οC
Loss on Drying: Not more than 0.5%
Residue on ignition: Not more than 0.1%
Heavy metals: Not more than 10ppm
Application: It is an anti-inflammatory analgesic. Used in activity rheumatism, rheumatoid arthritis, periarthritis, infection of the upper respiratory tract, periodontium inflammation, thrombus phlebitis etc.