戊烷分子式C5H12,其
同分异构体有三种:1.CH3-CH2-CH2-CH2-CH3
正戊烷2.CH3-CH(CH3)-CH2-CH3
异戊烷(2-甲基丁烷)3.C(CH3)4新戊烷(22-
二甲基丙烷)己烷:CH3-(CH2)4-CH3CH3CH(CH3)-(CH2)3-CH3CH3CH2CH(CH3)-(CH2)2-CH3CH3CH(CH3)CH(CH3)CH2CH2CH3CH3CH(CH3)CH2CH(CH3)CH2CH3CH3CH(CH3)CH2CH2CH(CH3)CH3CH3CH(CH3)CH(CH3)CH(CH3)CH3庚烷:CH3-(CH2)5-CH3(CH3)2-CH-(CH2)3-CH3CH3CH2CH(CH3)CH2CH2CH3(CH3CH2)3CH(CH3)3-C-CH2CH2CH3(CH3CH2)2-C-(CH3)2(CH3)2-CH-CH(CH3)-CH2CH3(CH3)2-CH-CH2-CH-(CH3)2(CH3)3-C-CH-(CH3)2