Table 4

Comparison of the inhibitory effect of different xanthates on the activities of P-450s 1A1 and 2B1

XanthateIC50 for 1A1IC50 for 2B1Ratio 1A1/2B1
μM
C27.9 mM63125
C313 mM31432
C83 mM7.2416
C144.3 μM2.51.7
C2026 μM5.44.7

Assay conditions were as described in Experimental Procedures. The data shown represent the mean from three different experiments.