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Summary of the spectral bands.
| Wave number (cm−1) | Functional group |
|---|---|
| 3700–3000 | O-H stretch, alcohol |
| 3700–2500 | O-H stretch, carboxylic acid and alcohol N-H stretch, amide |
| 2920, 2922, 2889 | C-H stretch, SP3 carbon |
| 1647–1697 | C=O stretch, amide |
| 1608 | C=C stretch, aromatic ring |
| 1541 | N-H bending, 1° amide |
| 1440–1400 | O-H bending, carboxylic acid |
| 1320–1210 | C-O stretch, alcohol, ether |
| 1300–1000 | C-O-C stretch, ether C-O stretch, alcohol, carboxylic acid |
| 1018 | C-O stretch, 1° or 2° alcohol |
