Patent classifications
C
CHEMISTRY; METALLURGY
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C07
ORGANIC CHEMISTRY
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C07D
HETEROCYCLIC COMPOUNDS
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307/00
Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
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C07D307/02
not condensed with other rings
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C07D307/04
having no double bonds between ring members or between ring members and non-ring members
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C07D307/10
with substituted hydrocarbon radicals attached to ring carbon atoms
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C07D307/12
Radicals substituted by oxygen atoms
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