having only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, attached to the ring nitrogen atom

Full Title

Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems > having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom > with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, directly attached to the ring carbon atoms > having only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, attached to the ring nitrogen atom