108-31-6
马来酸酐
+
61-54-1
色胺
→
98603-88-4
4-[2-(1H-indol-3-yl)ethylamino]-4-oxobut-2-enoic acid
59048-75-8
1-[2-(1H-indol-3-yl)ethyl]pyrrolidine-2,5-dione