Patent classifications
C
CHEMISTRY; METALLURGY
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C07
ORGANIC CHEMISTRY
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C07D
HETEROCYCLIC COMPOUNDS
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223/00
Heterocyclic compounds containing seven-membered rings having one nitrogen atom as the only ring hetero atom
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C07D223/02
not condensed with other rings
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C07D223/04
with only hydrogen atoms, halogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms
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