Processed databases
Atom-Mass pairs
Outputs for Histidine; LC-ESI-QTOF; MS2; CE:45 eV; [M+H]+
Database: Institute of Plant Biochemistry, Halle, Germany
Entry ID: PB000425
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: 42.034, 43.041, 55.042, 56.049, 67.04, 69.044, 82.052, 83.059,
Processing time: 0:00:01.588181
Results for the quried mass "54.034"
| Formula | Mass differences | Num. used protons | Num. required extra protons | Atom names |
| C2N2 | 0.017 | 2 | 0 | C2,C3,N8,N9 |
| C2N2 | 0.017 | 2 | 0 | C2,C4,N8,N9 |
| C2N2 | 0.017 | 2 | 0 | C3,C4,N8,N9 |
| C2O2 | 0.030 | 2 | 0 | C5,C6,O10,O11 |
| C3N1 | 0.036 | 4 | 0 | C1,C3,C4,N9 |
| C3N1 | 0.036 | 4 | 1 | C1,C2,C4,N8 |
| C3N1 | 0.036 | 4 | 0 | C1,C2,C4,N9 |
| C3N1 | 0.036 | 4 | 0 | C1,C4,C5,N7 |
| C3N1 | 0.036 | 4 | 0 | C1,C4,C5,N9 |
| C3N1 | 0.036 | 4 | 0 | C1,C5,C6,N7 |
| C3N1 | 0.036 | 4 | 1 | C2,C3,C4,N9 |
| C3N1 | 0.036 | 4 | 2 | C2,C3,C4,N8 |
| C3O1 | 0.013 | 2 | 0 | C1,C5,C6,O10 |
| C3O1 | 0.013 | 2 | 0 | C1,C5,C6,O11 |
| C2O1N1 | 0.006 | 0 | 0 | C5,C6,N7,O10 |
| C2O1N1 | 0.006 | 0 | 0 | C5,C6,N7,O11 |
| C4 | 0.056 | 6 | 2 | C1,C2,C4,C5 |