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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63/00
Compounds having carboxyl groups bound to a carbon atoms of six-membered aromatic rings
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C07C63/337
with carboxyl groups bound to condensed ring systems
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C07C63/34
containing two; condensed; rings
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C07C63/38
containing two carboxyl groups both bound to carbon atoms of the condensed ring system
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