Development and validation of a selective, sensitive and stability indicating UPLC-MS/MS method for rapid, simultaneous determination of six process related impurities in darunavir drug substance.
In this study a sensitive and selective gradient reverse phase UPLC-MS/MS method was developed for the simultaneous determination of six process related impurities viz., Imp-I, Imp-II, Imp-III, Imp-IV, Imp-V and Imp-VI in darunavir. The chromatographic separation was performed on Acquity UPLC BEH C18 (50 mm×2.1mm, 1.7μm) column using gradient elution of acetonitrile-methanol (80:20, v/v) and 5.0mM ammonium acetate containing 0.01% formic acid at a flow rate of 0.4mL/min. Both negative and positive electrospray ionization (ESI) modes were operated simultaneously using multiple reaction monitoring (MRM) for the quantification of all six impurities in darunavir. The developed method was fully validated following ICH guidelines with respect to specificity, linearity, limit of detection (LOD), limit of quantification (LOQ), accuracy, precision, robustness and sample solution stability. The method was able to quantitate Imp-I, Imp-IV, Imp-V at 0.3ppm and Imp-II, Imp-III, and Imp-VI at 0.2ppm with respect to 5.0mg/mL of darunavir. The calibration curves showed good linearity over the concentration range of LOQ to 250% for all six impurities. The correlation coefficient obtained was >0.9989 in all the cases. The accuracy of the method lies between 89.90% and 104.60% for all six impurities. Finally, the method has been successfully applied for three formulation batches of darunavir to determine the above mentioned impurities, however no impurity was found beyond the LOQ. This method is a good quality control tool for the trace level quantification of six process related impurities in darunavir during its synthesis.
Centre for Environmental Sustainability and Water Security (IPASA), Research Institute for Sustainable Environment, Universiti Teknologi Malaysia, 81300 Johor Bahru, Johor, Malaysia; Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81300 Johor Bahru, Johor, Malaysia.
Vijaya Bhaskar Reddy
VBR
A
Centre for Environmental Sustainability and Water Security (IPASA), Research Institute for Sustainable Environment, Universiti Teknologi Malaysia, 81300 Johor Bahru, Johor, Malaysia. Electronic address: zulyusop@utm.my.
Zulkifli
Z
Yusop
Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81300 Johor Bahru, Johor, Malaysia. Electronic address: jafariah@kimia.fs.utm.my.
Jafariah
J
Jaafar
Centre for Environmental Sustainability and Water Security (IPASA), Research Institute for Sustainable Environment, Universiti Teknologi Malaysia, 81300 Johor Bahru, Johor, Malaysia; Department of Environmental Engineering, Faculty of Civil Engineering, Universiti Teknologi Malaysia, 81300 Johor Bahru, Johor, Malaysia.
Azmi B
AB
Aris
Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81300 Johor Bahru, Johor, Malaysia.
Zaiton A
ZA
Majid
Centre for Environmental Sustainability and Water Security (IPASA), Research Institute for Sustainable Environment, Universiti Teknologi Malaysia, 81300 Johor Bahru, Johor, Malaysia; Department of Environmental Engineering, Faculty of Civil Engineering, Universiti Teknologi Malaysia, 81300 Johor Bahru, Johor, Malaysia.
Khalid
K
Umar
Centre for Environmental Sustainability and Water Security (IPASA), Research Institute for Sustainable Environment, Universiti Teknologi Malaysia, 81300 Johor Bahru, Johor, Malaysia; Department of Environmental Engineering, Faculty of Civil Engineering, Universiti Teknologi Malaysia, 81300 Johor Bahru, Johor, Malaysia.
Juhaizah
J
Talib
D002138:Calibration; D002626:Chemistry, Pharmaceutical / Q000379:methods; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D000069454:Darunavir / Q000737:chemistry*; D004340:Drug Contamination; D004355:Drug Stability; D057230:Limit of Detection; D011786:Quality Control; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D053719:Tandem Mass Spectrometry / Q000379:methods
D000069454:Darunavir
Antiretroviral drugs; Darunavir; Hyphenated techniques; Linearity; Process related impurities; Protease inhibitors