937279-20-4
3-oxo-3-quinoxalin-6-yl-propionic acid ethyl ester
+
306-37-6
二甲基肼吡啶
→
~25%
937279-21-5
1,2-dimethyl-5-quinoxalin-6-ylpyrazol-3-one
540-73-8
1,2-二甲基肼