Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure: — Allobarbital (INN), amobarbital (INN), barbital (INN), butalbital (INN), butobarbital, cyclobarbital (INN), methylphenobarbital (INN), pentobarbital (INN), phenobarbital (INN), secbutabarbital (INN), secobarbital (INN) and vinylbital (INN); salts thereof
Part of: 2933 — Heterocyclic compounds with nitrogen hetero-atom(s) only:
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