Observed versus theoretical accurate mass and elemental composition for metabolites M2 and M5, and for synthetic 9-hydroxy-20(S)-camptothecin
Compound | Elemental Compositon | Observed Mass | Theoretical Mass | Difference | |
|---|---|---|---|---|---|
| Da | ppm | ||||
| M2 | C25H24N4O8S | 540.1401 | 540.1293 | 19.9952 | |
| M5 | C30H31N5O11S | 669.1769 | 669.1719 | 7.4719 | |
| 9-OH-CPT | C20H17O5N2 | 364.1056 | 364.1037 | 5.2183 | |