Heterocyclic compounds with nitrogen hetero-atom's' only, containing a pyrimidine ring, whether or not hydrogenated, or piperazine ring in the structure (excl. malonylurea 'barbituric acid' and its derivatives, allobarbital 'INN', amobarbital 'INN')
Heterociklične spojine s pirimidinskim obročem ali piperazinskim obročem, druge, ostale