N-carbamoyl-sulfanilic acid 、 {4-[4-(Chlorocarbonylmethyl-amino)-benzenesulfonyl]-phenylamino}-acetyl chloride 以
1,4-二氧六环 为溶剂,
生成 4-[[2-[4-[4-[[2-oxo-2-[(4-sulfophenyl)carbamoylamino]ethyl]amino]phenyl]sulfonylanilino]acetyl]carbamoylamino]benzenesulfonic acid