Pinazepam and its metabolite N-desmethyldiazepam (nordiazepam, nordazepam) are transferred to the developing fetus in utero, but the plasma drug level in the mother is usually significantly higher than in the fetus. Pinazepam differs from other benzodiazepines in that it has a propargyl group at the N-1 position of the benzodiazepine structure. It...