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LC–MS-MS Parameters Optimized for α-PiHP and OH-α-PiHP
| Compound | Retention time (min) | Precursor (m/z) | Product (m/z) | Collision energy (v) |
|---|---|---|---|---|
| 91.055 | 22.6 | |||
| α-PiHP | 3.97 | 247.17 | 105.222 | 27.2 |
| 140.220 | 24.9 | |||
| 72.081 | 17.2 | |||
| OH-α-PiHP | 4.20 | 248.20 | 173.120 | 24.3 |
| 230.190 | 27.7 |
