TABLE 1

Michaelis-Menten kinetic parameters for the formation of 1-hydroxymidazolam, 4-hydroxydiclofenac, and dextrorphan from midazolam, diclofenac, and dextromethorphan in human liver microsomes

Vmax,fKm,f
pmol/(min⋅mg)µM
1-Hydroxymidazolam656 ± 232.83 ± 0.19
4′Hydroxydiclofenac2600 ± 407.42 ± 0.30
Dextrorphan129 ± 46.34 ± 0.46