37938-64-0 BRN 3009635 Butanoic acid, 4-(methyl(2,4,6-triiodo-3-propoxyphenyl)amino)-4-oxo- N-Methyl-3'-propoxy-2',4',6'-triiodosuccinanilic acid Succinanilic acid, N-methyl-3'-propoxy-2',4',6'-triiodo-