Processed databases
Atom-Mass pairs
Outputs for L-Leucine; LC-ESI-QQ; MS2; CE:20 V; [M+H]+
Database: Institute for Advanced Biosciences, Keio Univ.
Entry ID: KO003278
Synonyms: Leu, L-Leucine, 2-Amino-4-methylvaleric acid, (2S)-alpha-Leucine, (2S)-alpha-2-Amino-4-methylvaleric acid
Total mass: 131.1724
Formula: H13 C6 O2 N1
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: 42.8, 59.1, 71.1, 72.9, 74.1, 97.0, 115.1,
Processing time: 0:00:01.915022
Results for the quried mass "69.2"
| Formula | Mass differences | Num. used protons | Num. required extra protons | Atom names |
| C3O2 | 0.161 | 1 | 0 | C3,C5,C6,O8,O9 |
| C2O2N1 | 0.181 | 1 | 0 | O9,C5,C6,N7,O8 |
| C4N1 | 0.095 | 7 | 0 | C1,C3,C4,C5,N7 |
| C4N1 | 0.095 | 7 | 0 | C2,C3,C4,C5,N7 |
| C4N1 | 0.095 | 7 | 1 | C3,C4,C5,C6,N7 |
| C4O1 | 0.118 | 5 | 1 | C3,C4,C5,C6,O8 |
| C4O1 | 0.118 | 5 | 0 | C3,C4,C5,C6,O9 |
| C5 | 0.075 | 9 | 0 | C1,C2,C3,C4,C5 |
| C3O1N1 | 0.138 | 3 | 0 | C3,C5,C6,N7,O8 |
| C3O1N1 | 0.138 | 3 | 0 | C3,C5,C6,N7,O9 |