n=1 C1H4 CH4
Metan Etan
Propan
Butan
Pentan
Hexan
Heptan
Octan
Nonan
Decan
Undecan
Dodecan
.................. Eicosan
CH3 CH3
CH3 CH2 CH3 CH3 (CH2)2 CH3
n=2 C2H6
n=3 C3H8
n=4 C4H10
n=5 C5H12
n=6 C6H14
n=7 C7H16
n=8 C8H18
n=9 C9H20
n=10 C10H22
n=11 C11H24
n=12 C12H26
........... ............... ................................................
n=20 C20H42 CH3 (CH2 )18 CH3 Structura alcanilor
CH3 (CH2 )3
CH3 (CH2 )4
CH3 (CH2 )5
CH3 (CH2 )6
CH3 (CH2 )7
CH3 (CH2 )8
CH3 (CH2 )9
CH3 (CH2)10 CH3
CH3 CH3 CH3 CH3 CH3 CH3 CH3