Processed databases
Atom-Mass pairs
Outputs for L-Histidine; LC-ESI-QQ; MS2; CE:20 V; [M+H]+
Database: Institute for Advanced Biosciences, Keio Univ.
Entry ID: KO003055
Synonyms: His, 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: API3000, Applied Biosystems
Instrument type: LC-ESI-QQ
Ionization mode: POSITIVE
CAMP general report:
Acceptable mass threshold: 2.0158Out of range queried mass peaks:
Replicated queried mass peaks: 69.1, 80.8, 83.3, 93.1, 97.0, 110.3, 112.0, 113.3, 139.2,
Processing time: 0:00:02.262196
Results for the quried mass "68.0"
| Formula | Mass differences | Num. used protons | Num. required extra protons | Atom names |
| C3N2 | 0.077 | 4 | 0 | C1,C3,C4,N8,N9 |
| C3N2 | 0.077 | 4 | 0 | C1,C2,C4,N8,N9 |
| C3N2 | 0.077 | 4 | 0 | C1,C4,C5,N7,N9 |
| C3N2 | 0.077 | 4 | 1 | C2,C3,C4,N8,N9 |
| C3O1N1 | 0.054 | 2 | 0 | C1,C5,C6,N7,O10 |
| C3O1N1 | 0.054 | 2 | 0 | C1,C5,C6,N7,O11 |
| C4O1 | 0.074 | 4 | 1 | C1,C4,C5,C6,O10 |
| C4O1 | 0.074 | 4 | 0 | C1,C4,C5,C6,O11 |
| C4N1 | 0.097 | 6 | 2 | C1,C2,C3,C4,N8 |
| C4N1 | 0.097 | 6 | 1 | C1,C2,C3,C4,N9 |
| C4N1 | 0.097 | 6 | 0 | C1,C2,C4,C5,N7 |
| C4N1 | 0.097 | 6 | 2 | C1,C2,C4,C5,N8 |
| C4N1 | 0.097 | 6 | 1 | C1,C3,C4,C5,N9 |
| C4N1 | 0.097 | 6 | 2 | C1,C4,C5,C6,N9 |
| C4N1 | 0.097 | 6 | 1 | C1,C2,C4,C5,N9 |
| C4N1 | 0.097 | 6 | 1 | C1,C4,C5,C6,N7 |
| C3O2 | 0.031 | 0 | 0 | C1,C5,C6,O10,O11 |