| CAS_supplemental = (sodium salt)76-75-5 (free acid) | ChemSpiderID = 2272257 | ATC_prefix = N01 | ATC_suffix = AF03 | ATC_supplemental = | PubChem = 3000714 | DrugBank = APRD00660 | C = 11 | H = 17 | N = 2 | Na = 1 | O = 2 | S = 1 | molecular_weight = 264.32 g/mol | bioavailability = | metabolism = | elimination_half-life = 5.5-26 hours | excretion = | pregnancy_category = | legal_US = Schedule III | routes_of_administration = Oral, intravenous }} Sodium thiopental, better known as Sodium Pen… (More on Pentothal)