50-00-0
甲醛
+
513-35-9
2-甲基-2-丁烯
→
1122-03-8
4,4,5-trimethyl-1,3-dioxane
75-97-8
频哪酮
36681-67-1
4,5-dimethyl-2-phenyl-3,6-dihydro-2H-pyran
81374-76-7
2-butyl-4,5-dimethyl-3,6-dihydro-2H-pyran