4043-74-7
→
~97%
13506-27-9
5-氨基-2-甲基吡嗪-3(2H)-酮
~37%
17254-80-7
杀草敏-甲基-脱苯基
+
13645-74-4
4,5-二溴-2-甲基-2H-吡嗪-3-酮
21456-79-1
5-azido-4-bromo-2-methylpyridazin-3(2H)-one
933-76-6
4,5-二氯-2-甲基哒嗪-3-酮