Meth-
1 carbon
Eth-
2 carbons
Prop-
3 carbons
But-
4 carbons
Pent-
5 carbons
Hex-
6 carbons
Alkyl functional group
A single bonded chain of carbons and hydrogens, for example: –CH2–CH3.
Halogeno functional group
F, Cl, Br, or I
Hydroxyl functional group
–OH
Carbonyl functional group
C=O
Amino functional group
Amido functional group
Alkoxy functional group
Carboxyl functional group
Ester functional group
Phenyl functional group