1-(4-(((Carboxymethyl)methylamino)carbonyl)-2,3,5,6-tetraiodobenzoyl)-L-proline 1-(4-(N-Methyl-N-carboxymethyl-carbamoyl)-2,3,5,6-tetrajod-benzoyl)-pyrrolidin-2-carbonsaure 29820-36-8 BRN 0464097 L-Proline, 1-(4-(((carboxymethyl)methylamino)carbonyl)-2,3,5,6-tetraiodobenzoyl)-