Processed databases
Atom-Mass pairs
Outputs for Cytosine; LC-ESI-QQ; MS2; CE:50 V; [M-H]-
Database: Institute for Advanced Biosciences, Keio Univ.
Entry ID: KO000420
Synonyms: Cytosine
Total mass: 111.1018
Formula: H5 C4 O1 N3
Experimental information
MS type: MS2
Instrument: API3000, Applied Biosystems
Instrument type: LC-ESI-QQ
Ionization mode: NEGATIVE
CAMP general report:
Acceptable mass threshold: 2.0158Out of range queried mass peaks:
Replicated queried mass peaks: 40.9, 42.0, 67.3,
Processing time: 0:00:00.762621
Results for the quried mass "40.0"
| Formula | Mass differences | Num. used protons | Num. required extra protons | Atom names |
| C3 | 0.064 | 4 | 2 | C1,C2,C3 |
| C2N1 | 0.044 | 2 | 1 | C2,C4,N6 |
| C2N1 | 0.044 | 2 | 1 | C3,C4,N7 |
| C2N1 | 0.044 | 2 | 0 | C1,C3,N5 |
| C2N1 | 0.044 | 2 | 0 | C1,C2,N6 |
| C2N1 | 0.044 | 2 | 0 | C1,C3,N7 |
| C1N2 | 0.024 | 0 | 0 | C3,N5,N7 |
| C1N2 | 0.024 | 0 | 0 | C4,N6,N7 |