barbituric acid(redirected from 2,4,6-trioxypyrimidine)
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the parent substance of the barbiturates, not itself a central nervous system depressant.
bar·bi·tu·ric ac·id(bar'bi-chūr'ik as'id),
A crystalline dibasic acid from which barbital and other barbiturates are derived; has no sedative action.
barbituric acid(bär′bĭ-to͝or′ĭk, -tyo͝or′-)
An acidic pyrimidine derivative, C4H4O3N2, used in the manufacture of barbiturates and some plastics.
bar·bi·tu·ric ac·id(bar'bi-chūr'ik as'id)
A nonsedating crystalline dibasic acid from which barbital and other barbiturates are derived.