Table 1.
The retention time, precursor ion and main fragment ions of the reference compounds in positive ion mode of MSn analysis
| Authentic compounds | RT (min) | Quasi-molecular ion (measured) | MSn data (measured) |
|---|---|---|---|
| Eudesm-4(15),7-diene-9α,11-diol | 28.09 | 235.16[M + 1]+ | 217.11 → 189.09 |
| 3β-acetyl-Atractylenolid III | 29.72 | 291.17[M + 1]+ | 231.09 → 213.04 |
| Atractylenolid III | 31.02 | 249.07[M + 1]+ | 231.04 → 203.15 |
| Eudesm-4(15)-ene-7a,11-diol | 32.98 | 237.09[M + 1]+ | 219.09 → 201.05 |
| Atractylenolid I | 36.37 | 231.11[M + 1]+ | 185.05 → 203.15 |
| 4,6,12-tetradecatriene-8,10-diyne-1,3,14-triol | 42.97 | 233.11[M + 1]+ | 215.16 → 187.01 |