Processed databases
Atom-Mass pairs
Outputs for 4-Hydroxybenzoic acid; LC-ESI-QQ; MS2; CE:30 V; [M-H]-
Database: Institute for Advanced Biosciences, Keio Univ.
Entry ID: KO000965
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: 47.2, 60.2, 74.9, 79.0,
Processing time: 0:00:02.230741
Results for the quried mass "109.1"
| Formula | Mass differences | Num. used protons | Num. required extra protons | Atom names |
| C6O2 | 0.002 | 5 | 0 | C1,C2,C3,C4,C5,C7,O9,O10 |
| C5O3 | 0.040 | 1 | 0 | C2,C4,C5,C6,C7,O8,O9,O10 |
| C5O3 | 0.040 | 1 | 0 | C1,C3,C5,C6,C7,O8,O9,O10 |