Leflunomide is a medication of the DMARD type, used in active moderate to severe rheumatoid arthritis and psoriatic arthritis.

Chemical Name 5-methyl-N-[4-(trifluoromethyl) phenyl]-isoxazole-4-carboxamide

CAS Number 75706-12-6

Molecular Formula C12H9F3N2O2

Molecular Weight 270.21       

Items	Specification
Appearance	White or almost white crystalline powder
Identification	Meets the requirement
Melting Point	164.0 ~ 168.0
Loss on Drying	≤0.3%
Residue on Ignition	≤0.1%
Heavy Metals	≤20ppm
Related Substances	Meets the requirements
Assay	98.0 ~ 102.0%
Standard	USP31

Pyrimidine Synthesis Inhibitor (Cas 75706-12-6)