Want 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- |