Electrospray ionization-generated molecular ions for compound P and metabolites in LC-MS before and after active H/D exchange
| [M+H/D]+ | No. of Exchangeable H Atoms | ||
|---|---|---|---|
| Unlabeled | 14C-Labeled | ||
| m/z | |||
| P | 488→490 | 490→492 | 1 |
| M1 | 390→392 | 392→394 | 1 |
| M2 | 366→368 | 368→370 | 1 |
| M3 | 365→368 | 367→370 | 2 |
| M4 | 504→506 | 506→508 | 1 |
| M5 | 502→503 | 504→505 | 0 |
| M6 | 462→466 | 464→468 | 3 |