a high-performance liquid chromatographic method is described for the simultaneous determination of the anti-inflammatory agent suxibuzone and its metabolites , 4-hydroxymethylphenylbutazone , phenylbutazone , oxyphenbutazone , and gamma-hydroxyphenylbutazone , in plasma and urine .
C0031463
phenylbutazone
C0030078
oxyphenbutazone