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Development and validation of a reversed‐phase HPLC method for determination of nitrendipine in rat plasma: application to pharmacokinetic studies
Author(s) -
Venishetty Vinay Kumar,
Durairaj Chandrasekar,
Sistla Ramakrishna,
Yamsani Madhusudhan Rao,
Diwan Prakash V.
Publication year - 2007
Publication title -
biomedical chromatography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 65
eISSN - 1099-0801
pISSN - 0269-3879
DOI - 10.1002/bmc.761
Subject(s) - nitrendipine , chemistry , chromatography , high performance liquid chromatography , pharmacokinetics , detection limit , calibration curve , extraction (chemistry) , dichloromethane , pharmacology , calcium , solvent , medicine , organic chemistry
A simple and sensitive method for the determination of nitrendipine in rat plasma was developed using high‐performance liquid chromatography (HPLC). The procedure involves extraction of nitrendipine in dichloromethane/sodium hydroxide, followed by reversed phase HPLC using a Waters, Spherisorb ODS2 (250 × 4.6 mm, 5 µm) column and UV detection at 238 nm. The retention times of nitrendipine and internal standard (felodipine) were 5.0 min and 7.5 min, respectively. The calibration curves were linear over the range of 5 ng/mL (lower limit of quantification, LOQ) to 200 ng/mL for nitrendipine. The intra‐ and inter‐day coefficients of variation for all criteria of validation were less than 15% over the linearity range. The sensitivity and precision of the method were within the accepted limits (< 15%) throughout the validation period. The present method was also successfully applied for the study of plasma pharmacokinetics of nitrendipine loaded solid lipid nanoparticles (SLN) in rats. Copyright © 2007 John Wiley & Sons, Ltd.