74336-72-4
E-3-methyl-2-penten-4-ynal
+
122-51-0
原甲酸三乙酯
→
64259-53-6
5,5-diethoxy-3-methylpent-3-en-1-yne
50565-20-3
hexachloro-cyclopentane-1,3-dione
2-Penten-4-ynal, 3-methyl-, (2E)-