英文别名[4,4'-BIPYRIDINE]-2,2',6,6'-TETRACARBOXYLIC ACID TETRAETHYL ESTER; [4,4''-Bipyridine]-2,2'',6,6''-tetracarboxylic acid tetraethyl ester; [4,4'-Bipyridine]-2,2',6,6'-tetracarboxylic acid, 2,2',6,6'-tetraethyl ester; 2,2',6,6'-Tetraethoxycarbonyl-4,4'-bipyridine; diethyl 4-[2,6-bis(ethoxycarbonyl)pyridin-4-yl]pyridine-2,6-dicarboxylate 
