Table 1.
Relative intensities of the product ions observed by liquid chromatography–tandem mass spectrometry
| Compound | CE 10 V | CE 20 V | CE 30 V | CE 35 V | ||||
|---|---|---|---|---|---|---|---|---|
| m/z 232 | m/z 377 | m/z 232 | m/z 377 | m/z 232 | m/z 377 | m/z 232 | m/z 377 | |
| 5F-PB-22 (1) | 57.2 | 100 | 100 | 11.0 | 100 | – | 100 | – |
| 7Q isomer (2) | 3.8 | 100 | 47.7 | 100 | 100 | 4.5 | 100 | – |
| 6Q isomer (3) | – | 100 | 4.9 | 100 | 87.9 | 100 | 100 | 24.4 |
| 5Q isomer (4) | 2.8 | 100 | 28.7 | 100 | 100 | 10.6 | 100 | – |
| 4Q isomer (5) | 100 | 45.9 | 100 | – | 100 | – | 100 | – |
| 3Q isomer (6) | – | 100 | 19.0 | 100 | 100 | 35.5 | 100 | – |
| 8IQ isomer (7) | – | 100 | 32.1 | 100 | 100 | – | 100 | – |
| 7IQ isomer (8) | – | 100 | 2.0 | 100 | 79.6 | 100 | 100 | 38.1 |
| 6IQ isomer (9) | – | 100 | 35.1 | 100 | 100 | 3.4 | 100 | – |
| 5IQ isomer (10) | – | 100 | – | 100 | 100 | 95.0 | 100 | 26.6 |
| 4IQ isomer (11) | 4.1 | 100 | 63.2 | 100 | 100 | 2.6 | 100 | – |
– Not observed; CE collision energy, Q hydroxyquinoline, IQ hydroxyisoquinoline