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butobarbital, butobarbitone

a short- to intermediate-acting barbiturate; the sodium salt is used as a sedative and hypnotic.
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The drugs tested included acetylsalicylic acid, butobarbital, caffeine, cyclobarbital, diazepam, phenobarbital, phenytoin, salicylic acid, theophylline, and thiobarbital.
Barbiturates (phenobarbital, butobarbital, and secobarbital), meprobamate, antidepressant agents (amitriptyline, nortriptyline, imipramine, and clomipramine), phenothiazines (acepromazine, alimemazine, and cyamemazine), and benzodiazepines (diazepam, bromazepam, flunitrazepam, clonazepam, alprazolam, nitrazepam, nordazepam, and prazepam) were extracted from 5 mL of serum, 20 mL of urine, or 20 mL of gastric lavage fluid by Tox-Elut[R] from Varian (Harbor City, CA).