the benzodiazepine derivative flurazepam ( flz ) is widely used as a hypnotic , but the relative contributions of flz and its metabolites desalkylflurazepam ( da-flz ) , hydroxyethylflurazepam ( etoh-flz ) , and flurazepam aldehyde ( cho-flz ) to overall clinical activity remain uncertain .
C0005064
benzodiazepine
C0016375
flz