674-82-8
双乙烯酮
+
109-77-3
丙二腈
→
~74%
67643-16-7
2-氨基-6-甲基-4-氧代-4H-吡喃-3-甲腈
2911-22-0
6-methyl-2-sulfanylidene-1,3-oxazin-4-one
~55%