TABLE 2.
Fourier transform infrared spectrometer (FTIR) peaks and their assigned functional groups of ethyl acetate root extract of Skimmia anquetilia.
| S. No. | Wavenumber (cm–1) | Compound class | Functional group |
| 1. | 2929.80 | Alcohol | O-H stretching |
| Carboxylic acid | O-H stretching | ||
| Alkane | C-H stretching | ||
| Amine salt | N-H stretching | ||
| 2. | 2856.78 | Alcohol | O-H stretching |
| Carboxylic acid | O-H stretching | ||
| Alkane | C-H stretching | ||
| Amine salt | N-H stretching | ||
| 3. | 1712.83 | Aromatic compound | C-H bending |
| Aliphatic ketone | C=O stretching | ||
| Carboxylic acid | C=O stretching | ||
| 4. | 1621.05 | Conjugated alkene | C=C stretching |
| Amine | N-H bending | ||
| Cyclic alkene | C=C stretching | ||
| 5. | 1520.30 | Aromatics | C=C stretching |
| 6. | 1455.18 | Aromatics | C=C stretching |
| 7. | 1376.36 | Alcohol | O-H bending |
| Phenol | O-H bending | ||
| 8. | 1238.76 | Alkyl aryl ether | C-O stretching |
| Amine | C-N stretching | ||
| 9. | 1158.06 | Amine | C-N stretching |
| Tertiary alcohol | C-O stretching | ||
| 10. | 1030.58 | Amine | C-N stretching |
| 11. | 815.01 | Alkene | C=C bending |
| 12. | 714. 26 | Alkene | C=C bending |