Processed databases
Atom-Mass pairs
Outputs for 3-METHYLBUTANOIC ACID; EI-B; MS
Database: UNIV. OF OCCUPATIONAL AND ENVIRONMENTAL HEALTH, Tokyo
Entry ID: JP004262
Synonyms: 3-METHYLBUTANOIC ACID, ISOVALERIC ACID
Total mass: 102.1313
Formula: H10 C5 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: 27.0, 28.0, 31.0, 39.0, 40.0, 42.0, 43.0, 45.0, 55.0, 57.0, 60.0, 61.0, 85.0,
Processing time: 0:00:01.403737
Results for the quried mass "41.0"
| Formula | Mass differences | Num. used protons | Num. required extra protons | Atom names |
| C3 | 0.072 | 5 | 2 | C3,C4,C5 |
| C2O1 | 0.029 | 1 | 0 | C3,C5,O6 |
| C2O1 | 0.029 | 1 | 0 | C3,C5,O7 |