Patent classifications
C
CHEMISTRY; METALLURGY
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C07
ORGANIC CHEMISTRY
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C07D
HETEROCYCLIC COMPOUNDS
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237/00
Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings
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C07D237/02
not condensed with other rings
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C07D237/04
having less than three double bonds between ring members or between ring members and non-ring members
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