NCI172112

Rats^[2]
Male Sprague-Dawley rats (190-240 g) are lightly anaesthetized with pentobarbital (30 mg/kg i.p.) and [¹⁴C]NCI172112 (2 μCi/rat, 3.13 mg/kg) dissolved in DMSO injected into the femoral vein. The animals are individually housed in glass metabolic cages, with access to food and water for 96 h, and urine and faeces are collected separately. At 96 h, the rats are killed with an overdose of pentobarbital and each carcass is homogenized in 4 vol. water with a Waring blender. Radioactivity in aliquots of drug soln. and urine are measured by liquid scintillation counting with 15 mL phosphor.
Dogs^[2]
Female foxhounds, weighing 15-20 kg, are anaesthetized with pentobarbital (30 mg/kg) and are maintained in this state throughout the experiment with aditional pentobarbital. [¹⁴C] NCI172112 (50-60 μCi, 1 mg/kg) in 1 mL DMSO is administered to the dogs via a catheter inserted into the femoral vein. Blood samples are withdrawn from the femoral artery by means of an indwelling catheter at timed intervals from 1 min to 4 h and transferred to heparinized tubes chilled on crushed ice. Immediately, a 0.5 mL aliquot is removed and extracted with three 2 mL vol. of cold toluene. The remaining blood is centrifuged, and 0.5 mL aliquots of plasma digested with NCS, extracted with 2 mL vol. of toluene or diluted with 2 mL 10% trichloroacetic acid. From the initial sampling of the dog blood to the start of the extraction or pptn. procedures for plasma, 8-14 min elapsed.

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.