908835-88-1
→
~85%
2903-89-1
2-(3-oxoindol-2-yl)indol-3-one
110-86-1
吡啶
+
71-43-2
苯
64-19-7
乙酸
482-89-3
靛蓝
64784-13-0
indigo dye
6537-68-4
2-(3-hydroxy-1H-indol-2-yl)-1H-indol-3-ol