| Absorption bands (cm−1) |
Attributions |
| 3000 - 2700 |
CH, CH3 e CH2 (asymmetric stretching) |
| 1760 - 1750 |
C=O (stretch) |
| 1500 - 1250 |
CH3 e CH2 (symmetric angular deformation) |
| 1350 - 1150 |
CH2 e CH (asymmetric angular deformation) |
| 1300 - 1150 |
C-O (ester) (stretch) |