| 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) |