Table A3.
Collision-induced dissociation mass spectra [m/z (relative intensity)] obtained from protonated molecular ions of ω-methylsulphinylalkylnitriles using UPLC/ESI(+)-QTOFMS.
| n | CE [eV] | [M+H]+ | [M+H−CH4SO]+ | [M+H−CH4SO−NH3]+ | Other ions |
|---|---|---|---|---|---|
| 4 | 10 | 146 (73) | 82 (75) | − | 129 (42, C6H9OS+), 101 (93, C5H9S+), 98 (77, C5H8NO+), 87 (100, C4H7S+), 75 (11, C3H7S+), 70 (4, C4H8N+), 65 (9, CH5SO+), 61 (C2H5S+), 55 (15, C4H+7) |
| 7 | 15 | 188 (36) | 124 (100) | 107 (40) | 105 (7, C8H+9), 96 (8, C6H10N+), 91 (12, C7H+7), 82 (23, C5H8N+), 81 (18, C6H+9), 79 (54, C6H+7), 77 (7, C6H+5), 65 (3, CH5SO+) |
| 8 | 15 | 202 (57) | 138 (100) | 121 (23) | 110 (7, C7H12N+), 105 (2, C8H+9), 96 (36, C6H10N+), 95 (19, C7H+11), 93 (61, C7H+9), 91 (5, C7H+7), 82 (21, C5H8N+), 81(11, C6H+9), 79 (16, C6H+7), 77 (4, C6H+5), 65 (4, CH5SO+) |
Elemental compositions of observed fragment ions are supported by accurate mass measurements (±10 ppm). CE, collision energy.