METHODS Balsalazide disodium was synthesized by reactions of condensation , reduction, diazotization , coupling and salification from 4-nitrobenzoyl chloride.

• 方法以对硝基苯甲酰氯为起始原料,经缩合、还原、重氮化、偶合、成盐等反应制得巴柳氮二钠。