| MS/MS conditions | MG | 7-OH-MG | MG-D3 | 7-OH-MG-D3 |
| Precursor ion (m/z) | 399.5 | 415.5 | 402.5 | 418.6 |
| Product ion (m/z) | 174.3 | 190.2 | 238.3 | 193.2 |
| Collision energy (eV) | 45 | 45 | 35 | 45 |