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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57/00
Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms
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C07C57/18
with only carbon-to-carbon triple bonds as unsaturation
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C07C57/22
Acetylene dicarboxylic acid
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