Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members

Child Classifications

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• C07D 213/02 having three double bonds between ring members or between ring members and non-ring members
• C07D 213/90 having more than three double bonds between ring members or between ring members and non-ring members