80789-74-8
靛红-5-磺酸钠
→
~85%
132898-96-5
2,3-dioxo-1H-indole-5-sulfonyl chloride
7313-70-4
靛红-5-磺酸
~65%
126-33-0
环丁砜
+
869277-74-7
isatinsulfonic acid
~60%
91-56-5
吲哚-2,3-二酮