Development of a high-performance liquid chromatographic–tandem mass spectrometric method for the determination of pharmacokinetics of Co 102862 in mouse, rat, monkey and dog plasma

A method for determining concentration levels of Co 102862 in mouse, rat, monkey and dog plasma was validated in the range of 5 to 2000 ng/ml using 200 μl plasma sample volume. This validation report describes the linearity, specificity, sensitivity, reproducibility, accuracy, recovery and stability of the analytical method. The inter-day RSD ranged from 3.5 to 10.1%, intra-day RSD from 0.6 to 5.7% and intra-day accuracy (mean absolute percent difference) ranged from 2.2 to 14.9% for rat, monkey and dog plasma. A mini-validation (5–2000 ng/ml) of Co 102862 was performed in mouse plasma using the same methods. Additionally, the assay range at the low end was successfully extended to 0.5 ng/ml for monkey plasma. The method was used for the routine analysis of Co 102862 in mouse, rat, monkey and dog plasma and summary of the pharmacokinetic data are presented.