with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to other ring carbon atoms, e.g. maleimide

Full Title

Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom > with only hydrogen or carbon atoms directly attached to the ring nitrogen atom > having three double bonds between ring members or between ring members and non-ring members > having two doubly-bound oxygen atoms directly attached in positions 2 and 5 > with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to other ring carbon atoms, e.g. maleimide

Child Classifications

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• C07D 207/452 with hydrocarbon radicals, substituted by hetero atoms, directly attached to the ring nitrogen atom