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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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13/00
Cyclic hydrocarbons containing rings other than, or in addition to, six-membered aromatic rings
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C07C13/28
Polycyclic hydrocarbons or acyclic hydrocarbon derivatives thereof
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C07C13/32
with condensed rings
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C07C13/54
with three condensed rings
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C07C13/573
with three six-membered rings
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C07C13/60
Completely or partially hydrogenated phenanthrenes
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