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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67/00
Preparation of carboxylic acid esters
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C07C67/28
by modifying the hydroxylic moiety of the ester, such modification not being an introduction of an ester group
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C07C67/287
by introduction of halogen; by substitution of halogen atoms by other halogen atoms
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