Unexpected volatility of barbiturate derivatives: an extractive alkylation procedure for barbiturates and benzoylecgonine.
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D000478:Alkylation; D001463:Barbiturates / Q000302:isolation & purification* / Q000652:urine; D003042:Cocaine / Q000031:analogs & derivatives* / Q000302:isolation & purification; D006801:Humans; D014835:Volatilization
D001463:Barbiturates; C005618:benzoylecgonine; D003042:Cocaine