1-(4-(((Carboxymethyl)amino)carbonyl)-2,3,5,6-tetraiodobenzoyl)-L-proline 1-(4-(Carboxymethyl-carbamoyl)-2,3,5,6-tetrajod-benzoyl)-N-benzyl-aminoessigsaure [German] 30046-44-7 BRN 0503697 L-Proline, 1-(4-(((carboxymethyl)amino)carbonyl)-2,3,5,6-tetraiodobenzoyl)-