Processed databases
Atom-Mass pairs
Outputs for Histidine; LC-ESI-QTOF; MS2; CE:35 eV; [M+H]+
Database: Institute of Plant Biochemistry, Halle, Germany
Entry ID: PB000424
Synonyms: Histidine , 2-amino-3-(3H-imidazol-4-yl)propanoic acid
Total mass: 155.1542
Formula: H9 C6 O2 N3
Experimental information
MS type: MS2
Instrument: API QSTAR Pulsar i
Instrument type: LC-ESI-QTOF
Ionization: ESI
Ionization mode: POSITIVE
CAMP general report:
Acceptable mass threshold: 2.0158Out of range queried mass peaks:
Replicated queried mass peaks: 55.042, 56.049, 67.04, 68.048, 82.052, 83.059, 111.054,
Processing time: 0:00:01.481926
Results for the quried mass "81.044"
| Formula | Mass differences | Num. used protons | Num. required extra protons | Atom names |
| C3O2N1 | 0.014 | 1 | 0 | C1,C5,C6,N7,O10,O11 |
| C5O1 | 0.048 | 5 | 1 | C1,C2,C4,C5,C6,O10 |
| C5O1 | 0.048 | 5 | 0 | C1,C2,C4,C5,C6,O11 |
| C4O1N1 | 0.029 | 3 | 0 | C1,C4,C5,C6,N9,O10 |
| C4O1N1 | 0.029 | 3 | 0 | C1,C4,C5,C6,N9,O11 |
| C4O1N1 | 0.029 | 3 | 0 | C1,C4,C5,C6,N7,O10 |
| C4O1N1 | 0.029 | 3 | 0 | C1,C4,C5,C6,N7,O11 |
| C5N1 | 0.071 | 7 | 2 | C1,C2,C3,C4,C5,N8 |
| C5N1 | 0.071 | 7 | 2 | C1,C3,C4,C5,C6,N9 |
| C5N1 | 0.071 | 7 | 1 | C1,C2,C3,C4,C5,N9 |
| C5N1 | 0.071 | 7 | 2 | C1,C2,C4,C5,C6,N9 |
| C5N1 | 0.071 | 7 | 1 | C1,C2,C4,C5,C6,N7 |
| C4N2 | 0.052 | 5 | 0 | C1,C2,C3,C4,N8,N9 |
| C4O2 | 0.005 | 1 | 0 | C1,C4,C5,C6,O10,O11 |