123-75-1
四氢吡咯
+
132898-96-5
2,3-dioxo-1H-indole-5-sulfonyl chloride
→
~82%
220510-17-8
5-(1-吡咯烷磺酰基)-1H-吲哚-2,3-二酮
80789-74-8
靛红-5-磺酸钠