Compounds containing in the structure an unfused pyridine ring or a quinoline or isoquinoline ring-system, not further fused, lactames, other heterocyclic compounds with nitrogen hetero-atom(s) only
Spojine z nekondenziranim piridinovim obročem, kinolinsko ali izokinolinsko obročasto strukturo, druge heterociklične spojine s  heteroatomi dušika