Processed databases
Atom-Mass pairs
Outputs for L-Histidine; LC-ESI-ITFT; MS2; m/z:154.06; NEG
Database: Graduate School of Information Science, NAIST
Entry ID: KNA00500
Synonyms: L-Histidine, (S)-alpha-Amino-1H-imidazole-4-propionic acid
Total mass: 155.1542
Formula: H9 C6 O2 N3
Experimental information
MS type: MS2
Instrument: LTQ Orbitrap XL, Thermo Scientfic
Instrument type: LC-ESI-ITFT
Ionization: ESI
Ionization mode: NEGATIVE
CAMP general report:
Acceptable mass threshold: 2.0158Out of range queried mass peaks:
Replicated queried mass peaks: 66.810921, 109.002274, 110.008667, 137.003601,
Processing time: 0:00:01.892767
Results for the quried mass "80.992172"
| Formula | Mass differences | Num. used protons | Num. required extra protons | Atom names |
| C3O2N1 | 0.038 | 1 | 0 | C1,C5,C6,N7,O10,O11 |
| C5O1 | 0.100 | 5 | 1 | C1,C2,C4,C5,C6,O10 |
| C5O1 | 0.100 | 5 | 0 | C1,C2,C4,C5,C6,O11 |
| C4O1N1 | 0.080 | 3 | 0 | C1,C4,C5,C6,N7,O10 |
| C4O1N1 | 0.080 | 3 | 0 | C1,C4,C5,C6,N9,O10 |
| C4O1N1 | 0.080 | 3 | 0 | C1,C4,C5,C6,N7,O11 |
| C4O1N1 | 0.080 | 3 | 0 | C1,C4,C5,C6,N9,O11 |
| C5N1 | 0.123 | 7 | 2 | C1,C2,C3,C4,C5,N8 |
| C5N1 | 0.123 | 7 | 2 | C1,C3,C4,C5,C6,N9 |
| C5N1 | 0.123 | 7 | 1 | C1,C2,C3,C4,C5,N9 |
| C5N1 | 0.123 | 7 | 2 | C1,C2,C4,C5,C6,N9 |
| C5N1 | 0.123 | 7 | 1 | C1,C2,C4,C5,C6,N7 |
| C4N2 | 0.104 | 5 | 0 | C1,C2,C3,C4,N8,N9 |
| C4O2 | 0.057 | 1 | 0 | C1,C4,C5,C6,O10,O11 |