| DFT (cm−1) | SERS (cm−1) | Band assignment |
| 620 | 612 | υ (C-C), β (CH2) |
| 820 | 834 | υ (C-O), β (C-C) |
| 1047 | 1061 | υ (C-C), β (-OH) |
| 1298 | 1301 | γ (CH2) |
| 1416 | 1407 | γ (CH),γ (CH2) γ (CH2) |
| 1452 | 1443 | β (CH2) |
| 1735 | - | υ (C=N) |