Pharmacokinetics of 28 in male SD rats. Rats were
fasted overnight for three oral doses, but fed for the i.v. dose.
The in vivo half-life (t1/2, h, p.o.)
of 28 was 1 mg/kg, 2.16 ± 0.45; 3 mg/kg, 1.55 ±
0.42; 10 mg/kg, 1.91 ± 0.28. The t1/2 for the i.v. dose was 1.31 ± 0.06 h. Oral bioavailability (%
F) and other pharmacokinetic parameters (units) are indicated: MRT
(mean residence time, h); AUC (area under the curve, time 0 to ∞,
ng·h/mL); Cl (clearance, mL/min/kg); Vd (volume of distribution, L/kg); Cmax = 10.0 ± 8.3 (max. concentration, ng/mL); Tmax (time at max. concentration, h).