C1-C10烷烃的同分异构体CH4(1种)、C2H6(1种)、C3H8(1种)、C4H10(2种)、C5H12(3种)、C6H14(5种)、C7H16(9种)、C8H18(18种)、C9H20(35种)、C10H22(75种)。C10H22(75种):1.10个C为主链(1种)CH3(CH2)8CH3 正癸烷2.9个C为主链(4种)CH3(CH2)3CH(CH3)(CH2)3CH3 5-甲基壬烷 CH3(CH2)4CH(CH3)(CH2)2CH3 4-甲基壬烷CH3(CH2)5CH(CH3)CH2CH3 3-甲基壬烷 CH3(CH2)6CH(CH3)2 2-甲基壬烷3.8个C为主链(14种)CH3(CH2)3CH(CH2CH3)(CH2)2CH3 4-乙基辛烷 CH3(CH2)4CH(CH2CH3)2 3-乙基辛烷CH3(CH2)3C(CH3)2(CH2)2CH3 4,4-二甲基辛烷CH3(CH2)4C(CH3)2CH2CH3 3,3-二甲基辛烷 CH3(CH2)5C(CH3)3