| Wavenumber (cm‒1) | Intensity | Functional Group | Group Name |
|---|---|---|---|
| 3304.06 | Medium | ‒OH | Hydroxyl/Phenol |
| 2885.51 | Strong | C‒H | Alkane |
| 1762.92 | Strong | C=O | Carboxylic acid |
| 1751.36 | Strong | C=O | Carboxylic acid |
| 1734.01 | Strong | C=O | Carboxylic acid |
| 1724.36 | Strong | C=O | Carboxylic acid |
| 1654.92 | Strong | N‒C=O | Amide |
| 1595.13 | Strong | C‒N | Amide 1° bending vibration |
| 1425.40 | Medium | C‒O‒H | Carboxylic acid bending |
| 1246.02 | Medium | C‒O‒C | Ether |
| 1043.49 | Medium | CO‒O‒CO | Anhydride |