Table 1.
The data of retention time, and MS and MS2 fragment ions of 10 phenolics from leaves of C. paliurus by developed high-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (HPLC–Q–TOF–MS).
| Compounds | tR (min) | [M − H]− | MS/MS Fragment Ion (m/z) | Formula |
|---|---|---|---|---|
| 3-O-caffeoylquinic acid (P1) | 7.4 | 353.9874 | 191.0554 | C16H8O9 |
| 4-O-caffeoylquinic acid (P2) | 7.8 | 353.0875 | 191.0552; 179.0339; 135.0444 | C16H8O9 |
| quercetin-3-O-glucuronide (F1) | 14.9 | 477.0673 | 301.0351; 178.9979; 151.003 | C21H18O13 |
| quercetin-3-O-galactoside (F2) | 15.4 | 463.0888 | 301.0343; 271.0244; 178.9979; 151.0029 | C21H20O12 |
| isoquercitrin (F3) | 15.8 | 463.0888 | 301.0338; 271.0239; 178.9981; 151.0029 | C21H20O12 |
| kaempferol-3-O-glucuronide (F4) | 17.6 | 461.9727 | 286.0431; 285.0401; 113.0235; 85.0296 | C21H18O12 |
| kaempferol-3-O-glucoside (F5) | 18.5 | 447.0935 | 285.0388; 284.0319; 255.0295 | C21H20O11 |
| quercetin-3-O-rhamnoside (F6) | 18.8 | 447.0973 | 301.0337; 285.0388; 255.0294; 217.0133 | C21H20O11 |
| 4,5-di-O-caffeoylquinic acid (P3) | 19.8 | 515.1199 | 353.0864; 191.0553; 179.0342; 135.0443 | C25H24O12 |
| kaempferol-3-O-rhamnoside (F7) | 23.4 | 431.0981 | 285.0394; 255.0295; 227.0342 | C21H20O10 |