Functional group priority

Carboxylic acid

(#/14, suffix name, prefix name)

1/14

Suffix: -oic acid
Prefix: carboxy

Ester

(#/14, suffix name, prefix name)

2/14

Suffix: -oate
Prefix: alkoxycarbonyl

Amide

(#/14, suffix name, prefix name)

3/14

Suffix: -amide
Prefix: amide

Nitrile

(#/14, suffix name, prefix name)

4/14

Suffix: -nitrile
Prefix: cyano

Aldehyde (=O)

(#/14, suffix name, prefix name)

5/14

Suffix: -al
Prefix: oxo (=O)

Aldehyde (-CH=O)

(#/14, suffix name, prefix name)

6/14

Suffix: -al
Prefix: formyl (-CH=O)

Always at terminus

Ketone

(#/14, suffix name, prefix name)

7/14

Suffix: -one
Prefix: oxo (=O)

Alcohol

(#/14, suffix name, prefix name)

8/14

Suffix: -ol
Prefix: hydroxy

Amine

(#/14, suffix name, prefix name)

9/14

Suffix: -amine
Prefix: amino

Alkene

(#/14, suffix name, prefix name)

10/14

Suffix: -ene
Prefix: alkenyl

Alkyne

(#/14, suffix name, prefix name)

11/14

Suffix: -yne
Prefix: alkynyl

Alkane

(#/14, suffix name, prefix name)

12/14

Suffix: -ane
Prefix: alkyl

Ether

(#/14, suffix name, prefix name)

13/14

Suffix: n/a
Prefix: alkoxy

Alkyl halide

(#/14, suffix name, prefix name)

14/14

Suffix: n/a
Prefix: halo