Patent classifications
C
CHEMISTRY; METALLURGY
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C07
ORGANIC CHEMISTRY
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C07C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
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49/00
Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
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C07C49/587
Unsaturated compounds containing a keto groups being part of a ring
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C07C49/617
a keto group being part of a condensed ring system
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C07C49/637
the condensed ring system containing ten carbon atoms
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