Development and Validation of Ecofriendly HPLC-MS Method for Quantitative Assay of Amoxicillin, Dicloxacillin, and Their Official Impurity in Pure and Dosage Forms

Figure 2

HPLC/MS chromatogram of resolved mixture of 20 µg mL⁻¹ of AMOX, 10 µg mL⁻¹ of 6-APA, and 20 µg mL⁻¹ of DIC (R_t = 1.610, 2.538, and 3.503 min, respectively) using (acetonitrile:water (65 : 35 by volume) as mobile phase.