Table 3.

HPLC conditions.

Drug	Mobile Phase	Wavelength (nm)	Flow Rate (mL/min)	Retention Time (min)
Warfarin	20 mM phosphate buffer:methanol = 55:45	308	1.0	10.0
Antipyrine	20 mM phosphate buffer:methanol = 70:30	254	1.0	12.9
Atenolol	50 mM phosphate buffer:acetonitrile = 90:10	226	1.0	5.2
Furosemide	50 mM phosphate buffer:methanol = 60:40	280	1.2	6.7