Table 1.
Compounds identified in Rubia cordifolia L. extract.
| NO. | RT | Mass Found | Error | MS2 Ions | Identification |
|---|---|---|---|---|---|
| (min) | (ppm) | ||||
| 1 | 10.68 | 461.0732 | 1.2 | 417, 298, 280, 255,226 | |
| 2 | 12.55 | 610.4194 | 0.1 | 564, 546, 451, 338, 225, 130 | |
| 3 | 13.7 | 723.5057 | 0 | 677, 659, 564, 451, 338, 225 | |
| 4 | 14.52 | 836.5906 | 0.3 | 790, 225 | |
| 5 | 15.15 | 949.6771 | 0.2 | 903 | |
| 6 | 17.62 | 563.1419 | 0.2 | 269, 240 | Ruberythric acid |
| 7 | 17.86 | 577.1579 | 0.2 | 577, 269, 240 | |
| 8 | 19.57 | 619.1667 | 0.9 | 577, 559, 269, 240 | |
| 9 | 20.06 | 417.0836 | 1.5 | 255, 241 | 2-Methyl-1,3,6-hydroxy-9,10-anthraquinone-3-O-β-d-glucopyranoside |
| 10 | 21.32 | 299.0201 | 0.6 | 255, 227, 183, 171, 143, 129 | Pseudopurpurin |
| 11 | 21.41 | 239.0346 | 1.1 | 211, 195, 183, 167, 155 | An isomer of alizarin |
| 12 | 21.43 | 283.0254 | 0.4 | 239, 211, 195, 167 | Munjistin |
| 13 | 21.59 | 619.1683 | 0 | 577, 269, 240 | |
| 14 | 21.61 | 665.1745 | 0.1 | 619, 577, 372, 269, 239 | |
| 15 | 23.05 | 267.0304 | 0.6 | 223, 195 | Nordamnacanthal |
| 16 | 23.1 | 473.1093 | 0.6 | 268, 240 | |
| 17 | 23.12 | 345.0408 | 0.5 | 317, 301, 289, 273, 260, 245 | Unknown |
| 18 | 23.93 | 661.1793 | 0.4 | 619, 601, 269, 240 | |
| 19 | 24.4 | 401.0887 | 0.3 | 356, 328, 300, 272, 244 | Alizarin-2-O-Glc |
| 20 | 25.37 | 801.3497 | 0.1 | 755, 630, 556, 493, 460 | |
| 21 | 26.23 | 253.0504 | 0.1 | 225, 209, 195 | An isomer of rubiadin |
| 22 | 28.42 | 453.0623 | 0 | 409, 394, 350, 306, 293 | |
| 23 | 29.53 | 269.0461 | 0.5 | 254, 241, 223, 210, 195 | 6-Hydroxyrubiadin |
| 24 | 28.45 | 317.1033 | 0 | 213, 185, 157, 129 | |
| 25 | 30.56 | 239.0343 | 0.6 | 211, 195, 167, 155 | Alizarin |
| 26 | 30.9 | 255.0297 | 0 | 227, 183, 171, 143, 129, 101 | Purpurin |
| 27 | 30.91 | 293.1764 | 0.1 | 236, 221, 205, 192, 177 | |
| 28 | 30.99 | 593.1315 | 0.3 | 549, 505, 417, 383, 357, 313 | |
| 29 | 31.15 | 745.2326 | 0.1 | 644, 513, 496, 482 | |
| 30 | 31.63 | 297.1531 | 1 | 269, 254, 239, 223, 211, 197, 183, 169 | 1-Hydroxy-2-carboxyl-3-methoxy-anthraquinone |
| 31 | 33.74 | 283.0612 | 2.3 | 268, 240, 211 | Physcion |
| 32 | 34.32 | 253.0502 | 0.5 | 225, 209, 195 | Rubiadin |
| 33 | 34.77 | 297.0773 | 0.5 | 251, 223, 195 | |
| 34 | 34.93 | 457.0722 | 0.4 | 413, 384, 369, 356 | |
| 35 | 36.28 | 441.135 | 0.1 | 372, 313, 297, 269 | |
| 36 | 36.42 | 313.0511 | 0.1 | 285, 269, 257, 229, 201 | |
| 37 | 37.7 | 325.1845 | 0.7 | 279, 197, 183, 119 | |
| 38 | 38.36 | 295.228 | 1 | 277, 259, 183, 171 | |
| 39 | 38.52 | 339.2003 | 0.3 | 197, 183, 119 | |
| 40 | 43.24 | 353.2123 | 0 | 177, 163 |