pentobarbital sodiumpen·to·bar·bi·tal sodium
an odorless, white, crystalline powder, CHNONa, soluble in water: used in medicine as a sedative, hypnotic, and analgesic
Origin of pentobarbital sodiumpento- for penta- (because of methylbutyl five-carbon group) + barbital
A barbiturate, C11H17N2O3Na, that takes effect relatively rapidly, used as a sedative, a hypnotic, and an anticonvulsive drug, and for euthanasia. Also called pentobarbitone .