Table 1.
Chromatographic and spectrometric characteristics of secondary metabolites identified in Millettia macrophylla phenolic fraction using UHPLC-ESI (+)-LTQ-Orbitrap
| Peak | Rt (min) | Experimental m/z | Theoretical m/z | Δ (ppm) | RDB | [M + H]+ | Assignment |
|---|---|---|---|---|---|---|---|
| 1 | 1.61 | 185.0804 | 185.0808 | −2.352 | 3.5 | C9H13O4 | 2,4,6-Trimethoxyphenol |
| 2 | 2.81 | 255.0646 | 255.0652 | −2.452 | 10.5 | C15H11O4 | Daidzein |
| 3 | 3.97 | 285.0750 | 285.0757 | −2.491 | 10.5 | C16H13O5 | Maackiain |
| 4 | 6.53 | 285.0753 | 285.0757 | −1.614 | 10.5 | C16H13O5 | Biochanin A |
| 5 | 6.69 | 315.0856 | 315.0863 | −2.173 | 10.5 | C17H15O6 | Pisatin |
| 6 | 7.68 | 315.0855 | 315.0863 | −2.649 | 10.5 | C17H15O6 | 7-Methyl tectorigenin |
| 7 | 8.24 | 269.0801 | 269.0808 | −2.696 | 10.5 | C16H13O4 | Formononetin |
| 8 | 8.39 | 299.0908 | 299.0965 | −1.939 | 10.5 | C17H15O5 | Afromorsin |
| 9 | 8.75 | 297.0751 | 297.0757 | −2.289 | 11.5 | C17H13O5 | Flemichapparin B |
| 10 | 10.12 | 283.0957 | 283.0965 | −2.775 | 10.5 | C17H15O4 | Daidzein dimethyl ether |
| 11 | 10.70 | 283.0594 | 283.0601 | −2.508 | 11.5 | C16H11O5 | Coumestrol methyl ether |