Development of chiral high performance liquid chromatographic assays for the enantiomers of 8-hydroxy-(di-n-propylamino)tetralin and three 8-keto-pyrrole-substituted analogues.

Two chiral HPLC methods using protein-based stationary phases for the analysis of 8-hydroxy-(di-n-propylamino)tetralin and three 8-keto-pyrrole analogues are presented. Efficient solid-phase extraction enabled quantification of 0.02 microgram ml-1 of the 8-keto-pyrrole analogues from 500 microliters rat hepatocyte suspensions, and 0.2 microgram ml-1 to be measured from 50 microliters of rat plasma using UV detection at 315 nm.