Professor and Principal, Sanskar City College of Pharmacy, Thakurtola, Rajnandgaon, Chhattisgarh-491441, India
UPLC/Q-TOF-MS (Ultra-performance liquid chromatographic/quadrupole time-of-flight mass spectrometric) technique has been applied for identification and characterization of degradation products of Valsartan. For identification of drugs, the Q-TOF mass spectrometer was operated in negative ionization mode and quantification was done using the MS/MS transitions at m/z 434.50 to 255.50. The chromatographic separation was achieved on Acquity UPLCTM BEH C18 (100.0 × 2.1 mm, 1.7μm) column using isocratic mobile phase consisting of acetonitrile-2mM ammonium acetate (50:50, v/v) at a flow rate of 0.25 mL/min. Drug was degraded when treated with acid, alkali and oxidative stress conditions but found stable in photolytic condition. Degradation products were identified and possible degradation mechanisms were established.
UPLC/Q-TOF-MS, Valsartan, Degradation, Metabolites, Degradation Mechanism
