SENSITIVE BIO ANALYTICAL METHOD DEVELOPMENT AND VALIDATION OF VENETOCLAX IN HUMAN PLASMA BY LC-ESI-MS/MS
Journal: Indian Drugs (Vol.57, No. 06)Publication Date: 2020-06-28
Authors : Potluri H.;
Page : 32-38
Keywords : * For correspondence e-mail: haritha.potluri@gmail.com;
Abstract
A specific and sensitive method of liquid chromatography–tandem mass spectrometry was demonstrated for the experimental determination of venetoclax in human plasma utilising venetoclax-D8 as an internal standard. The column Xbridge C18, 50 × 4.6mm, 5 µm was used for attaining chromatographic separation by utilising 10mM ammonium formate and methanol as isocratic mobile phase in the composition ratio of 20:80 (V/V). The flow-rate selected was 0.7ml/min. Venetoclax and venetoclax-D8 are identified in multiple reaction monitoring (MRM) positive mode with proton adducts at m/z 869.53 →553.21 and m/z 877.14 → 553.23, respectively. For the successful extraction of drug as well as internal standard, liquid-liquid extraction technique was efficiently utilised. The developed technique was established in a linear concentration range of 5.0-5000.0 pg/ml along with correlation coefficient (r2) of 0.9994. Intra and inter-day precisions were found to be 0.7 to 1.90% and 0.7 to 2.0 % for venetoclax and venetoclax-D8, respectively. Accuracy was found to be within 98.6 to 101.99% and 99.17 to 101.14 % for venetoclax and venetoclax-D8, respectively. It was observed that throughout the bench top studies, post-operative stability studies and freeze-thawing cycles, venetoclax retained stability.
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