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Main chemical compositions of OEO.
| Compounds | Retention index | Relative percent in OEO | Molecular weight | formula |
|---|---|---|---|---|
| Thymol | 1289 | 25.54 | 150.217 g/mol | C10H14O |
| Carvacrol | 1296 | 23.12 | 150.217 g/mol | C10H14O |
| p-Cymene | 1026 | 22.07 | 134.21 g/mol | C10H14 |
| γ-Terpinene | 1059 | 17.80 | 136.24 g/mol | C10H16 |
Retention indices were determined using retention times of n-alkanes as standard on fused silica capillary HP-5 column that were injected after essential oil under the same chromatographic conditions.
