Raman bands of the CMPF in saline and serum samples from healthy subjects.
| Description of CMPF peaks | Raman shift (cm−1) | |||
|---|---|---|---|---|
| Powder sample | Saline | Serum | Urine | |
| CH3 and CH2 deformation | 1455 | 1455 | 1440 | 1458 |
| CH3 and CH2 deformation | 1465 | — | — | — |
| CH3 umbrella mode | 1380 | 1380 | 1380 | 1380 |
| Stretching vibrations of the C–O bond | 1260 | 1260 | 1260 | 1260 |
| C–O | 1170 | — | — | — |
| C–C | 1020 | 1020 | 1020 | — |
| Symmetric furan ring torsion | 1000 | 1000 | 1000 | 1000–1050 |
| C C in the furan ring | — | — | — | 1600 |