Table 3. Compounds identified in the extract of bark, lignum, leaves and fruit of R. verniciflua by LC-MS/MS analysis.
| Peak No. | Compounds identification | tR (mins) |
observed m/z |
calculated m/z |
Molecular formula [M-H]- |
MS/MS fragments (m/z) |
UV (λmax, nm) |
Detected parts a) |
|---|---|---|---|---|---|---|---|---|
| 1 | Gallic acid | 8.0320 | 169.0153 | 169.0142 | C7H5O5 | 125 [M-CO2-H]- | 271 | BK, LG |
| 2 | Unidentified | 11.2310 | 315.1107 | 315.1085 | C14H19O8 | 153 [M-C6H10O5-H]- | LF | |
| 3 | Dihydroxybenzoic acid | 11.9810 | 153.0202 | 153.0193 | C7H5O4 | 109 [M-CO2-H]- | 217, 261, 297 | B, L |
| 4 | Unidentified | 12.6050 | 297.0636 | 297.0616 | C13H12O8 | 135 [M-C6H10O5-H]- | 291, 325 | LF |
| 5 | Unidentified | 12.9230 | 579.1552 | 579.1567 | C23H31O17 | 137 [M-442-H]- | 280 | LG |
| 6 | Unidentified | 13.2300 | 353.0905 | 353.0878 | C16H17O9 | 191 [M-C6H10O5-H]- | 294, 325 | LF |
| 7 | Unidentified | 13.3590 | 579.1548 | 579.1567 | C23H31O17 | 137 [M-442-H]- | 281 | LG |
| 8 | 4-methyl gallate | 13.6510 | 183.0309 | 183.0299 | C8H7O5 | 124 [M-C2H3O2-H]- | 275 | BK, LG, LF |
| 9 | Unidentified | 14.0420 | 297.0636 | 297.0616 | C13H12O8 | 135 [M-C6H10O5-H]- | 316 | LF |
| 10 | Unidentified | 14.4170 | 337.0957 | 337.0929 | C16H17O8 | 191 [M-C6H10O4-H]- | 313 | LF |
| 11 | Unidentified | 15.0460 | 287.0582 | 287.0561 | C15H11O6 | 109 [M-178-H]- | LG | |
| 12 | Unidentified | 15.3580 | 607.1866 | 607.1880 | C25H35O17 | 271 [M-336-H]- | 280 | LG |
| 13 | Pentagalloyl glucose | 15.5510 | 939.1188 | 939.1103 | C41H31O26 | 770 [M-C7H5O5-H]- | 279 | BK, LG |
| 14 | Fustin | 15.7950 | 287.0585 | 287.0561 | C15H11O6 | 109 [M-C9H6O4-H]- | 218, 231, 279 | BK, LG |
| 15 | Quercitrin | 16.2910 | 447.0964 | 447.0933 | C21H19O11 | 301 [M-C6H10O4-H]- | 258, 351 | LF |
| 16 | Taxifolin | 16.6700 | 303.0533 | 303.0510 | C15H11O7 | 285 [M-H2O-H]- | 290 | BK, LG |
| 17 | Garbanzol | 17.0440 | 271.0635 | 271.0612 | C15H11O5 | 243 [M-CO-H]- | 213, 276, 311 | BK, LG |
| 18 | Kaempferol-3-O-rhamnoside | 17.1650 | 431.1017 | 431.0984 | C21H19O10 | 285 [M-C6H10O4-H]- | 262, 344 | LF |
| 19 | Fisetin | 17.5440 | 285.0427 | 285.0405 | C15H9O6 | 135 [M-C8H6O3-H]- | 316, 359 | BK, LG |
| 20 | Sulfuretin | 18.4810 | 269.0477 | 269.0455 | C15H9O5 | 133 [M-C8H8O2-H]- | 257, 269 | BK, LG |
| 21 | Butein | 20.1050 | 271.0634 | 271.0612 | C15H11O5 | 135 [M-C8H8O2-H]- | 261, 380 | BK, LG |
| 22 | Unidentified | 21.2620 | 541.1168 | 541.1140 | C30H21O10 | 311 [M-230-H]- | 225 | FR |
| 23 | Urushiol (3-pentadecyl catechol, double bond = 3) |
26.7350 | 313.2198 | 313.2173 | C21H29O2 | 122 [M-C14H23-H]- | 225 | BK |
a) BK, bark; LG, lignum; LF, leaf; FR, fruit