867-13-0
膦酰乙酸三乙酯
+
36854-53-2
ethylmethylketene
→
65359-66-2
ethyl 4-methylhexa-2,3-dienoate
1-Buten-1-one, 2-methyl-
464-72-2
苯频哪醇
134434-06-3
ethyl 3-ethyl-3-methyl-2,2,7,7-tetraphenyl-1,6-dioxaspiro[3.3]heptane-5-carboxylate