SENIORITY TABLE FOR THE FUNCTIONAL GROUP
| Organic Compound | General Formula | Functional Group | Secondary Suffix |
| 1)Sulphonic Acid | R-SO3H | -SO3H | sulphonicacid |
| 2)Carboxylic Acid | R-COOH | -COOH | oicacid |
| 3)Acid anhydride | R-COOCO-R | -C2O3 | oicanhydride |
| 4)Ester | R-COOR | -COOR | alkyloate |
| 5)Acid Chloride | R-COCl | -COCl | oylchloride |
| 6)Acid Amide | R-CONH2 | -CONH2 | amide |
| 7)Aldehyde | R-CHO | -CHO | al |
| 8)Cyanide | R-CN | -CN | nitrile |
| 9)Ketone | R-CO-R | -CO- | one |
| 10)isocyanide | R-NC | -NC | isonitrile or carbylamine |
| 11)Alcohol | R-OH | -OH | ol |
| 12)Thiol | RSH | -SH | thiol |
