Functional Group Priority (Suffix Order) (Acid > sulfonic > ester > acyl halide > amide > nitrile > aldehyde > ketone > alcohol >)
jee-mainjee-advancedneet-ug
Acid > sulfonic > ester > acyl halide > amide > nitrile > aldehyde > ketone > alcohol > amine > alkyne > alkene
What each symbol means
| Symbol | What it stands for |
|---|---|
| priority | Higher entry becomes principal suffix; lower groups are prefixes/substituents |
When to use this
NCERT/JEE standard table; ester R-O-CO- parent is alkanoate side. Memorize top segment for exams.