Processed databases
Atom-Mass pairs
Outputs for ISOBUTYRIC ACID; EI-B; MS
Database: UNIV. OF OCCUPATIONAL AND ENVIRONMENTAL HEALTH, Tokyo
Entry ID: JP004280
Synonyms: ISOBUTYRIC ACID
Total mass: 88.1048
Formula: H8 C4 O2
Experimental information
MS type: MS
Instrument: HITACHI RMU-7M
Instrument type: EI-B
Ionization: 70 eV
Ionization mode: POSITIVE
CAMP general report:
Acceptable mass threshold: 2.0158Out of range queried mass peaks:
Replicated queried mass peaks: 28.0, 29.0, 41.0, 43.0, 44.0, 73.0,
Processing time: 0:00:01.165563
Results for the quried mass "27.0"
| Formula | Mass differences | Num. used protons | Num. required extra protons | Atom names |
| C1O1 | 0.002 | 1 | 1 | C4,O5 |
| C1O1 | 0.002 | 1 | 0 | C4,O6 |
| C2 | 0.045 | 3 | 0 | C1,C3 |
| C2 | 0.045 | 3 | 0 | C2,C3 |
| C2 | 0.045 | 3 | 2 | C3,C4 |