CH4
Methane
C2H6
Ethane
C3H8
Propane
C4H10
Butane
C5H12
Pentane
C6H14
Hexane
C7H16
Heptane
C8H18
Octane
C9H20
Nonane
C10H22
Decane
-CH3
Methyl group
-C2H5
Ethyl group
-C3H7
Propyl
-C4H9
Butyl
-C5H11
Pentyl
-HC6H13
Hexyl
-C7H15
Heptyl
-C8H17
Octyl
-C9H19
Nonyl
-C10H21
Decyl