Table 1.
Retention time, and related MS data of the target compounds.
| No. | Compounds | RT (min) | Precursor Ion [M − H]− (m/z) | Product Ion (m/z) | Fragmentor (V) | CE (eV) |
|---|---|---|---|---|---|---|
| 1 | Catalpol | 0.90 | 361.2 | 169.0 | −60 | −18 |
| 2 | Aucubin | 1.18 | 345.1 | 183.0 | −50 | −22 |
| 3 | Harpagide | 1.26 | 363.0 | 201.0 | −135 | −18 |
| 4 | Geniposidic acid | 1.47 | 373.1 | 123.0 | −130 | −26 |
| 5 | Neochlorogenic acid | 2.24 | 353.0 | 191.0 | −95 | −20 |
| 6 | Protocatechuic acid | 2.37 | 152.9 | 109.0 | −85 | −16 |
| 7 * | Syringin | 2.59 | 395.2 | 232.1 | 136 | 31 |
| 8 | Chlorogenic acid | 2.71 | 353.0 | 191.0 | −95 | −20 |
| 9 | Pinoresinol-di-O-β- d-glucopyranoside | 2.79 | 681.2 | 357.3 | −155 | −34 |
| 10 | Geniposide | 2.82 | 387.1 | 225.0 | −180 | −12 |
| 11 | Cryptochlorogenic acid | 2.89 | 353.0 | 191.0 | −95 | −20 |
| 12 | Caffeic acid | 3.05 | 179.0 | 134.6 | −125 | −20 |
| 13 | Rutin | 3.15 | 609.1 | 300.0 | −245 | −46 |
| 14 | Isoquercitrin | 3.31 | 463.0 | 299.9 | −180 | −36 |
| 15 | Genipin | 3.33 | 225.0 | 101.1 | −30 | −16 |
| 16 | Pinoresinol-4’-O-β- d-glucopyranoside | 3.36 | 519.2 | 357.1 | −160 | −22 |
| 17 | Astragalin | 3.45 | 447.1 | 283.9 | −100 | −36 |
| 18 | Isochlorogenic acid A | 3.53 | 515.1 | 191.0 | −145 | −38 |
| 19 | Kaempferol | 4.98 | 285.0 | 116.9 | −180 | −48 |
| 20 | Baicalein | 5.15 | 269.0 | 139.0 | −130 | −40 |
| 21 | Quercetin | 10.78 | 301.1 | 255.1 | −45 | −10 |
* The compound was detected in positive mode as Na-adduct.