61923-96-4

[2,2'-Bipyridine]-3,3',5,5'-tetracarboxylic acid,1,1',2,2'-tetrahydro-2,2',6,6'-tetramethyl-, tetraethyl ester

[2,2'-Bipyridine]-3,3',5,5'-tetracarboxylic acid,1,1',2,2'-tetrahydro-2,2',6,6'-tetramethyl-, tetraethyl ester