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Forced degradation study of canagliflozin with the use of HPLC
Máchalová, Jitka ; Křížek, Tomáš (advisor) ; Sobotníková, Jana (referee)
In this work a method for determination of canagliflozin and its degradation products by HPLC with UV and MS detector was developed. The developed method was used to study the forced degradation of canagliflozin and to investigate the major degradation products resulting from exposure of canagliflozin to oxidative stress. Canagliflozin is a phenolic glycoside derivative and a glucose-sodium transporter 2 inhibitor that stimulates urinary glucose excretion by suppressing glucose reabsorption from the proximal tubule in the kidneys. Canagliflozin is used to control blood glucose levels in patients with type 2 diabetes. In an optimized method, an Agilent Poroshell 120 SB-Aq (2.1 × 100 mm, 2.7 µm) column was used and a mixture of buffer (10mM HCOOH adjusted with ammonium hydroxide to pH 3.5) and acetonitrile as a mobile phase. The method validation included testing of accuracy, repeatability, the limit of detection and quantification, linearity and linear dynamic range, the robustness of the method, and testing of sample stability. The limit of detection of the method was 8.9·10-5 mg ml-1 (2.0·10-7 mol l-1 ) and the limit of quantification was 3.0·10-4 mg ml-1 (6.8·10-7 mol l-1 ). At a concentration of 0.3 mg ml-1 , the repeatability (n = 7) was 0.17 % and 0.75 % for the retention time and the peak...

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