Processed databases
Atom-Mass pairs
Outputs for 3-OXOBUTANOIC ACID ETHYL ESTER; CI-B; MS
Database: UNIV. OF OCCUPATIONAL AND ENVIRONMENTAL HEALTH, Tokyo
Entry ID: JP005974
Synonyms: 3-OXOBUTANOIC ACID ETHYL ESTER, ACETOACETIC ACID ETHYL ESTER
Total mass: 130.1414
Formula: H10 C6 O3
Experimental information
MS type: MS
Instrument: HITACHI M-80
Instrument type: CI-B
Ionization: 100 eV
Ionization mode: POSITIVE
CAMP general report:
Acceptable mass threshold: 2.0158Out of range queried mass peaks:
Replicated queried mass peaks: 85.0, 86.0, 88.0, 89.0, 103.0, 131.0,
Processing time: 0:00:01.431063
Results for the quried mass "84.0"
| Formula | Mass differences | Num. used protons | Num. required extra protons | Atom names |
| C4O2 | 0.073 | 4 | 0 | C2,C4,C5,C6,O7,O8 |
| C4O2 | 0.073 | 4 | 0 | C1,C3,C4,C6,O8,O9 |