Figure 2: Typical HPLC chromatograms obtained from 50 μl injections of Hydrochlorothiazide (3.86 min.), Valsartan (5.8 min.), Losartan potassium (7.92 min.), Irbesartan (9.64 min.) and Telmisartan (13.81 min.) respectively under optimized chromatographic conditions.