1352221-13-6Relevant articles and documents
3,4-DIALKYLBIPHENYLDICARBOXYLIC ACID COMPOUND, 3,4-DICARBOALKOXYBIPHENYL-3', 4'-DICARBOXYLIC ACID AND CORRESPONDING ACID ANHYDRIDES, AND PROCESSES FOR PRODUCING THESE COMPOUNDS
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Paragraph 0051; 0052, (2013/08/14)
The present invention relates to the 3,4-Dicarboalkoxybiphenyl-3′,4′-dicarboxylic acid (including the corresponding acid anhydride) represented by the general formula (1): wherein R11 and R12 each represents an alkyl group having 1 to 4 carbon atoms, and n represents the number of waters of hydration that is 0 or 1.