| Flaxseed oil (cm−1) | Groups | Flaxseed oil (cm−1) | Groups |
| 3010 | ν =CH- | 1371 | δ CH3 |
| 2918 | ν C-H assimétrica | 1242 | ν C-O |
| 2855 | ν C-H simétrica | 1159 | ν C-O |
| 1739 | ν C=O | 1095 | ν C-O |
| 1647 | ν C=C | 717 | ρ CH2 |
| 1454 | δ CH2 | - | - |