| Amino Acid | m/z | |||
| Arginine | 70, 87, 100, 112 | |||
| Proline | 70 (87, 100 112 absent) | |||
| Valine | 72 | |||
| Lysine | 84 (101 absent) | |||
| Leucine/Ile | 86 | |||
| Glutamine | 101 (84 absent) | |||
| Glutamic | 102 | |||
| Methionine | 104 | |||
| Histidine | 110 | |||
| Phenylalanine | 120 | |||
| CAMCys* | 133 | |||
| CACys** | 134 | |||
| AcrCys*** | 147 | |||
| Tyrosine | 136 | |||
| Tryptophan | 159 | |||
| Phosphotyrosine | 216 | |||
| *carboxamidomethylcysteine | ||||
| **carboxymethylcysteine | ||||
| *** acrylamide modified |