Functional Group Precedence in IUPAC nomenclatureWant
to know which functional group has priority over others? Well, look here!
| Functional Group Name |
Formula |
Suffix
(when highest precedence) |
Prefix
(when lower precedence) |
| carboxyl |
-COOH |
-oic acid |
carboxy- |
| aldehyde |
-CHO |
-al |
formyl- |
| ketone |
-CO- |
-one |
oxo- |
| alcohol |
-OH |
-ol |
hydroxy- |
| amine |
-NH2 |
-amine |
amino- |
| ether |
-OR |
none |
alkoxy- |
| alkene |
C=C |
-ene |
en- |
| alkyne |
 |
-yne |
yn- |
