TABLE 2

Analytical conditions for measuring inhibitor depletion by LC/MS/MS

Ionization mode indicates the type of ionization (i.e., ESI) and the polarity (+ or −).

InhibitorIonization ModeMass Transition MonitoredInternal Standard
amu
TiclopidineESI+264 → 154Dextromethorphan
Tienilic acidESI−329 → 274Probenecid
S-FluoxetineESI+310 → 44Probenecid
ParoxetineESI+330 → 192Dextromethorphan
AzamulinESI+479 → 175d6-Dehydronifedipine
MibefradilESI+496 → 202d5-N-Desalkylebsatine
  • amu, atomic mass units; ESI, electrospray ionization.