Inj.# Febuxostat Impurity A Impurity B Impurity C Impurity D  LOQ(µg/ml) 0.404 0.426 0.420 0.424 0.428 LOD(µg/ml) 0.13 0.142 0.140 0.141 0.142

LOQ-Limit of Quantitation; LOD-Limit of Detection

Table 3: Limit of quantitaion and detection.