3-Propionylaminomethyl-5-amino-2,4,6-trijod-benzoesaeure 、 3-[2-[2-[2-(3-Chloro-3-oxopropoxy)ethoxy]ethoxy]ethoxy]propanoyl chloride 以
N,N-二甲基乙酰胺 为溶剂,
生成
Benzoic acid, 3,3'-(ethylenebis(oxyethyleneoxyethylenecarbonylimino))bis(5-(propionamidomethyl)-2,4,6-triiodo-