67-66-3
氯仿
+
5615-93-0
N,N'-dihydroxybutanediamide
98-09-9
苯磺酰氯
108-88-3
甲苯
→
73674-56-3
(2,6-dioxo-1,3-diazinan-1-yl) benzenesulfonate
110-86-1
吡啶