Processed databases
Atom-Mass pairs
Outputs for Leucine; LC-ESI-QTOF; MS2; CE:40 eV; [M+H]+
Database: Institute of Plant Biochemistry, Halle, Germany
Entry ID: PB000394
Synonyms: Leucine , 2-amino-4-methylpentanoic acid
Total mass: 131.1724
Formula: H13 C6 O2 N1
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: 42.029, 43.019, 43.055, 45.034, 55.021, 55.057, 57.061, 58.046, 69.072, 73.066,
Processing time: 0:00:01.564041
Results for the quried mass "56.053"
| Formula | Mass differences | Num. used protons | Num. required extra protons | Atom names |
| C2O1N1 | 0.010 | 2 | 0 | C5,C6,N7,O8 |
| C2O1N1 | 0.010 | 2 | 0 | C5,C6,N7,O9 |
| C2O2 | 0.033 | 0 | 0 | C5,C6,O8,O9 |
| C3N1 | 0.033 | 6 | 0 | C3,C4,C5,N7 |
| C3N1 | 0.033 | 6 | 1 | C3,C5,C6,N7 |
| C3O1 | 0.010 | 4 | 1 | C3,C5,C6,O8 |
| C3O1 | 0.010 | 4 | 0 | C3,C5,C6,O9 |
| C4 | 0.053 | 8 | 1 | C1,C3,C4,C5 |
| C4 | 0.053 | 8 | 1 | C2,C3,C4,C5 |