Patent classifications
C
CHEMISTRY; METALLURGY
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C07
ORGANIC CHEMISTRY
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C07D
HETEROCYCLIC COMPOUNDS
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233/00
Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings
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C07D233/04
having one double bond between ring members or between a ring member and a non-ring member
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C07D233/28
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
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C07D233/30
Oxygen or sulfur atoms
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C07D233/40
Two or more oxygen atoms
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