| WAVE NUMBER (cm−1) | VIBRATION | STRUCTURE |
| 2950 - 2907 | δs (CH3) | −CH3 |
| 3500 - 3338 | δs (OH) | −OH |
| 2650 - 2113 | δas (CH2) | −CH2 |
| 1750 - 1722 | δas (CO) | −C=O |
| 1457 - 1400 | δs (CH) | −CH3−H |
| 1250 - 1159 | Vs (CO) | −C−O− |