Heterocyclic compounds in which an oxygen is attached to a cyclic nitrogen.

Synonyms: 0, Heterocyclic N Oxides, Cyclic N Oxides, Cyclic N-Oxides, Oxides, Cyclic N, N Oxides, Cyclic, N-Oxides, Heterocyclic, Heterocyclic N-Oxides, N-Oxides, Cyclic