Table 3. THPP Core Deuteration Effects on CYP3A4 TDI.

Cyanide trapping assay: Compounds (20 μM) were incubated for 0, 30, and 60 min in rat liver microsomes (1 mg/mL) fortified with KH2PO4 (0.1 M; pH7.4) buffer, NADPH (2 mM), MgCl2 (5 mM), KCN, and stable label K13C15N (1 mM; 70:30) at 37 °C.
GSH trapping assay: Compounds (10 μM) were incubated for 1 h in human liver microsomes (1 mg/mL) fortified with KH2PO4 (0.1 M; pH: 7.4) buffer, NADPH (2 mM), MgCl2 (3 mM), GSH, and stable label GSH (4 mM; 50:50) at 37 °C.