2-(((2-Hydroxyethyl)amino)carbonyl)-3,4,5,6-tetraiodobenzoic acid Benzoic acid, 2-(((2-hydroxyethyl)amino)carbonyl)-3,4,5,6-tetraiodo- DH2186800 Phthalamic acid, N-(2-hydroxyethyl)-3,4,5,6-tetraiodo-