Table 5.
The m/z values of GL, MG-H1 and amino acids, based on LC-MS/MS analysis
| Analyte | Polarity | Precursor ion (m/z) | Product ion (m/z) | Q1 pre bias (V) | Collision energy | Q3 pre bias (V) |
|---|---|---|---|---|---|---|
| GL | Positive | 309.2 | 84.1 | −21 | −35 | −30 |
| [13C6] GL | Positive | 315.2 | 84.1 | −15 | −14 | −15 |
| MG-H1 | Positive | 229.2 | 114.1 | −12 | −16 | −19 |
| [2H3] MG-H1 | Positive | 232.2 | 117.1 | −16 | −16 | −22 |
| Lys | Positive | 147.1 | 84.1 | −11 | −40 | −29 |
| [13C6] Lys | Positive | 153.2 | 89.1 | −11 | −35 | −14 |
| Arg | Positive | 175.1 | 70.2 | −13 | −5 | −27 |
| [13C6] Arg | Positive | 181.2 | 74.2 | −13 | −10 | −27 |
Abbreviation: LC-MS/MS, liquid chromatography-tandem mass spectrometry.