Processed databases
Atom-Mass pairs
Outputs for L-Methionine; LC-ESI-ITFT; MS2; m/z:121.06; POS
Database: Graduate School of Information Science, NAIST
Entry ID: KNA00078
Synonyms: L-Methionine, Methionine, L-2-Amino-4methylthiobutyric acid
Total mass: 149.2109
Formula: H11 C5 S1 O2 N1
Experimental information
MS type: MS2
Instrument: LTQ Orbitrap XL, Thermo Scientfic
Instrument type: LC-ESI-ITFT
Ionization: ESI
Ionization mode: POSITIVE
CAMP general report:
Acceptable mass threshold: 2.0158Out of range queried mass peaks:
Replicated queried mass peaks:
Processing time: 0:00:01.468037
Results for the quried mass "54.906406"
| Formula | Mass differences | Num. used protons | Num. required extra protons | Atom names |
| C2O2 | 0.106 | 1 | 0 | C4,C5,O7,O8 |
| C2S1 | 0.172 | 1 | 0 | C2,C3,S9 |
| C3N1 | 0.172 | 5 | 0 | C2,C3,C4,N6 |
| C3N1 | 0.172 | 5 | 0 | C2,C4,C5,N6 |
| C3O1 | 0.149 | 3 | 0 | C2,C4,C5,O7 |
| C3O1 | 0.149 | 3 | 0 | C2,C4,C5,O8 |
| C2O1N1 | 0.129 | 1 | 0 | C4,C5,N6,O7 |
| C2O1N1 | 0.129 | 1 | 0 | C4,C5,N6,O8 |
| C4 | 0.192 | 7 | 2 | C2,C3,C4,C5 |