Patent classifications
C
CHEMISTRY; METALLURGY
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C07
ORGANIC CHEMISTRY
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C07D
HETEROCYCLIC COMPOUNDS
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271/00
Heterocyclic compounds containing five-membered rings having two nitrogen atoms and one oxygen atom as the only ring hetero atoms
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C07D271/02
not condensed with other rings
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C07D271/10
1,3,4-Oxadiazoles; Hydrogenated 1,3,4-oxadiazoles
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C07D271/113
with oxygen, sulfur or nitrogen atoms, directly attached to ring carbon atoms, the nitrogen atoms not forming part of a nitro radical
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