Table 1.
MS parameters of the target analytes and jaceosidin.
| Analytes | Retention Time (min) | Parent (m/z) | Daughter (m/z) (Q/I) a | Cone Voltage (V) | Collision Energy (eV) |
|---|---|---|---|---|---|
| Monotropein | 4.03 | 388.98 | 146.95/190.95 | 47 | 20/25 |
| Deacetyl asperulosidic acid | 4.98 | 389.12 | 118.93/164.95 | 45 | 24/21 |
| Asperulosidic acid | 10.96 | 431.05 | 251.03/165.01 | 48 | 22/20 |
| Asperuloside | 11.41 | 413.03 | 146.95/190.94 | 51 | 18/23 |
| Rubiadin-1-methyl ether | 17.42 | 267.02 | 223.99/251.95 | 50 | 25/25 |
| Rubiadin | 20.29 | 252.97 | 224.01/209.96 | 50 | 30/26 |
| Jaceosidin (IS) | 13.73 | 328.98 | 313.95/298.96 | 50 | 22/22 |
a Q: transitions for quantification; I: transitions for identification.