29943-42-8
四氢吡喃酮
+
105-56-6
氰乙酸乙酯
→
~97%
33451-54-6
Ethyl cyano(tetrahydro-4H-pyran-4-ylidene)acetate
194862-82-3
4-(cyanomethyl)oxane-4-carbonitrile