oxybarbiturate

ox·y·bar·bi·tu·rate

(ŏk′sē-bär-bĭch′ər-ĭt, -ə-rāt′, -bär′bĭ-to͝or′ĭt, -āt′)
n.
Any of various barbiturates that act as hypnotics and contain an oxygen atom.
References in periodicals archive ?
Though IgE-mediated hypersensitivity reactions to thiopental, a thiobarbiturate, have been described, no reports of IgE-mediated hypersensitivity reactions to methohexital, an oxybarbiturate, have been described [11].