Processed databases
Atom-Mass pairs
Outputs for 4-Hydroxybenzoic acid; LC-ESI-QQ; MS2; CE:40 V; [M-H]-
Database: Institute for Advanced Biosciences, Keio Univ.
Entry ID: KO000966
Synonyms: p-Hydroxybenzoate, Hydroxybenzenecarboxylic acid, 4-Hydroxybenzoic acid, Hydroxybenzoic acid, 4-Hydroxybenzoate
Total mass: 138.1205
Formula: H6 C7 O3
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, 46.9, 59.1, 61.0, 74.9, 93.1,
Processing time: 0:00:01.516283
Results for the quried mass "39.3"
| Formula | Mass differences | Num. used protons | Num. required extra protons | Atom names |
| C3 | 0.244 | 3 | 1 | C1,C2,C5 |
| C3 | 0.244 | 3 | 1 | C1,C3,C6 |
| C3 | 0.244 | 3 | 1 | C1,C3,C5 |
| C3 | 0.244 | 3 | 1 | C2,C4,C6 |
| C3 | 0.244 | 3 | 1 | C2,C4,C5 |
| C3 | 0.244 | 3 | 1 | C3,C4,C6 |
| C2O1 | 0.287 | 1 | 0 | C3,C6,O8 |
| C2O1 | 0.287 | 1 | 0 | C4,C6,O8 |
| C2O1 | 0.287 | 1 | 0 | C5,C7,O9 |
| C2O1 | 0.287 | 1 | 1 | C5,C7,O10 |