Lactones n.e.c., heterocyclic compounds with nitrogen hetero-atom(s), containing an unfused pyrazole and triazine ring, a pyrimidine, piperazine, phenothiazine ring, hydantoin and its derivatives
Laktoni d. n., heterociklične spojine z dušikovimi heteroatomi z nekondenziranim pirazolovim in triazinskim obročem, pirimidinskim, piperazinskim, fenotiazinovim obročem, hidantoin, njegovi derivati