Barbiturate

имя существительное [химия] барбитурат

Большой англо-русский словарь

Barbiturate

noun 1. a salt or ester of barbituric acid 2. any of various derivatives of barbituric acid (as phenobarbital) that are used especially as sedatives, hypnotics, and antispasmodics and are often addictive

Merriam-Webster's Collegiate Dictionary