studies of the new benzodiazepine drug phenazepam comparatively to diazepam , clonazepam , nitrazepam , phenobarbital and diphenylhydantoin have shown that by its anticonvulsant effects phenazepam is similar to clonazepam and differs from other antiepileptic agents .
C0031507
diphenylhydantoin
C0003299
antiepileptic agents