Patent classifications
C
CHEMISTRY; METALLURGY
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C07
ORGANIC CHEMISTRY
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C07D
HETEROCYCLIC COMPOUNDS
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211/00
Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
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C07D211/92
with a hetero atom directly attached to the ring nitrogen atom
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C07D211/94
Oxygen atom, e.g. piperidine N-oxide
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