Table 1. The MS and MS/MS parameters of the standards and their quantitative results.
| Name | No. | Retention time (min) | Fragmentor voltages (V) | Productor ion (m/z) | Collision energy (eV) | Product ion(m/z) | Content (µg/mL) | CV (%) (n = 5) | Accuracy% |
| Catalpol | 1 | 0.66 | 120 | (M+COOH)-:407.1 | 7 | 199.0, 361.0 | 4.07± 0.12 | 2.9% | 97.4% |
| Paeoniflorin | 2 | 10.91 | 120 | (M+COOH)-:525.0 | 8 | 449.0, 121.0 | 230.15± 6.54 | 2.8% | 102.4% |
| Ferulic acid | 3 | 12.87 | 135 | (M-H)-:193.0 | 12 | 133.8, 177.7 | 14.72± 0.45 | 3.0% | 101.5% |
| Liquiritin | 4 | 13.97 | 150 | (M-H)-:417.1 | 15 | 254.9 | 6.58± 0.12 | 1.8% | 98.2% |
| Rutin | 5 | 14.96 | 150 | (M-H)-:609.0 | 32 | 299.9 | 13.73± 0.51 | 3.7% | 99.1% |
| Hesperidin | 6 | 18.72 | 150 | (M-H)-:609.1 | 20 | 300.9 | 10.13± 0.18 | 1.7% | 103.4% |
| Quercetin | 7 | 24.384 | 150 | (M-H)-:301.0 | 20 | 150.9, 120.9 | 15.86± 0.64 | 4.0% | 98.5% |
| Asiaticoside | 8 | 25.67 | 150 | (M+COOH)-:1003.4 | 18 | 957.3, 469.0 | 26.12± 1.04 | 3.9% | 104.2% |
| Glycyrrhizic acid | 9 | 28.98 | 160 | (M-H)-:821.3 | 46 | 351.2, 193.1 | 120.66±3.63 | 3.0% | 97.8% |