2,3,5,5,6-pentamethylhept-2-ene

2,3,3,6-tetramethyl-5-methylideneheptane

2,3,6,7-tetramethyloct-2-ene

2,3,7-trimethyl-6-methylideneoctane

1,4-二溴-2,3-双(溴甲基)-2-丁烯