1',4'-Dihydro-3',5'-dicarboxy-1,2',6'-trimethyl-2,4'-bipyridinium iodide diethyl ester 2,4'-BIPYRIDINIUM, 1',4'-DIHYDRO-3',5'-DICARBOXY-1,2',6'-TRIMETHYL-, IODIDE, DIE 2,4'-Bipyridinium, 1',4'-dihydro-3',5'-dicarboxy-1,2',6'-trimethyl-, iodide, diethyl ester 78005-05-7 Pan-W-4