Processed databases
Atom-Mass pairs
Outputs for Purine; LC-ESI-QQ; MS2; CE:20 V; [M+H]+
Database: Institute for Advanced Biosciences, Keio Univ.
Entry ID: KO003749
Synonyms: Purine
Total mass: 120.1119
Formula: H4 C5 N4
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: 61.4, 62.8,
Processing time: 0:00:01.688737
Results for the quried mass "103.8"
| Formula | Mass differences | Num. used protons | Num. required extra protons | Atom names |
| C5N3 | 0.289 | 2 | 0 | C1,C2,C3,C4,C5,N7,N8,N9 |
| C5N3 | 0.289 | 2 | 0 | C1,C2,C3,C4,C5,N6,N8,N9 |
| C5N3 | 0.289 | 2 | 0 | C1,C2,C3,C4,C5,N6,N7,N9 |
| C5N3 | 0.289 | 2 | 0 | C1,C2,C3,C4,C5,N6,N7,N8 |
| C4N4 | 0.270 | 0 | 0 | C2,C3,C4,C5,N6,N7,N8,N9 |
| C4N4 | 0.270 | 0 | 0 | C1,C3,C4,C5,N6,N7,N8,N9 |
| C4N4 | 0.270 | 0 | 0 | C1,C2,C4,C5,N6,N7,N8,N9 |
| C4N4 | 0.270 | 0 | 0 | C1,C2,C3,C5,N6,N7,N8,N9 |
| C4N4 | 0.270 | 0 | 0 | C1,C2,C3,C4,N6,N7,N8,N9 |