| Raman Shift (cm−1) | Attributions |
| 1245.44 | Amide II |
| 1456.73 - 1465.5 | Alanine |
| 1658.28 | Glycine |
| 2132.47 | Isonitrile R-N-C bond |
| 2882.10 | L-glycine |
| 2936.84 | L-alanine |
| 2955.65 | L-glutamine |
| 2974.47 | L-proline |