Patent classifications
C
CHEMISTRY; METALLURGY
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C07
ORGANIC CHEMISTRY
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C07D
HETEROCYCLIC COMPOUNDS
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265/00
Heterocyclic compounds containing six-membered rings having one nitrogen atom and one oxygen atom as the only ring hetero atoms
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C07D265/28
1,4-Oxazines; Hydrogenated 1,4-oxazines
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C07D265/34
condensed with carbocyclic rings
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C07D265/38
[b, e]-condensed with two six-membered rings
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