Determination of reversed-phase high performance liquid chromatography based octanol-water partition coefficients for neutral and ionizable compounds: Methodology evaluation

摘要

Highlights?RPLC based logPdetermination methods have been revisited comprehensively.?Isocratic and gradient RPLC methods were conducted in the same lab and assessed.?Different lipophilicity indexes were compared for logP/logDdetermination.?Ion-pair RPLC method was explored for studying logDof sulfonic acids.AbstractReversed-phase liquid chromatography (RPLC) based octanol-water partition coefficient (logP) or distribution coefficient (logD) determination methods were revisited and assessed comprehensively. Classic isocratic and some gradient RPLC methods were conducted and evaluated for neutral, weak acid and basic compounds. Different lipophilicity indexes in logP or logD determination were discussed in detail, including the retention factor logkwcorresponding to neat water as mobi