with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms

Full Title

Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom > not condensed with other rings > having two or three double bonds between ring members or between ring members and non-ring members > with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms

Child Classifications

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• C07D 307/58 One oxygen atom, e.g. butenolide
• C07D 307/60 Two oxygen atoms, e.g. succinic anhydride
• C07D 307/62 Three oxygen atoms, e.g. ascorbic acid
• C07D 307/64 Sulfur atoms
• C07D 307/66 Nitrogen atoms
• C07D 307/68 Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen
• C07D 307/70 Nitro radicals