Patent classifications
C
CHEMISTRY; METALLURGY
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C07
ORGANIC CHEMISTRY
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C07D
HETEROCYCLIC COMPOUNDS
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251/00
Heterocyclic compounds containing 1,3,5-triazine rings
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C07D251/02
not condensed with other rings
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C07D251/12
having three double bonds between ring members or between ring members and non-ring members
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C07D251/26
with only hetero atoms directly attached to ring carbon atoms
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C07D251/46
with oxygen or sulfur atoms attached to the two other ring carbon atoms
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