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 1,3-oxazole or hydrogenated 1,3-oxazole rings > 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 263/36 One oxygen atom
• C07D 263/44 Two oxygen atoms
• C07D 263/46 Sulfur atoms
• C07D 263/48 Nitrogen atoms not forming part of a nitro radical