3-(4-Bromophenyl)-5-methyl-1,2,4-oxadiazole CAS 118183-92-9
| CAS No. | 118183-92-9 |
| Molecular Formula | C9H7BrN2O |
| Molecular Weight | 239.07 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 3-(4-Bromophenyl)-5-methyl-1,2,4-oxadiazole meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
3-(4-Bromophenyl)-5-methyl-1,2,4-oxadiazole (CAS 118183-92-9), molecular formula C9H7BrN2O and molecular weight 239.07 g/mol, is a CATO reference standard with documented purity and traceability.
3-(4-Bromophenyl)-5-methyl-1,2,4-oxadiazole (C9H7BrN2O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C9H7BrN2O |
| Molecular Weight | 239.07 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
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- 5-Bromo-4-methyl-1H-pyrrolo[2,3-b]pyridine-3-carbaldehyde (CAS 1190313-75-7)
- 2-Bromo-5-(4-methyl-1H-pyrazol-1-yl)pyrazine (CAS 1159820-44-6)
- 5-Amino-3-(2-bromophenyl)isoxazole (CAS 119162-51-5)
- Methyl(4S,5S)-dihydro-5-methyl-2-phenyl-4-oxazolecarboxylate (CAS 82659-84-5)
- (2-Aminophenyl)(p-tolyl)methanone (CAS 36192-63-9)
- (4-(Ethylthio)furan-2-yl)(phenyl)methanol (CAS 1443326-14-4)
- 5-(Aminomethyl)-3-bromopyridin-2-ol (CAS 1511792-50-9)
- (3R,5S)-3-Ethyl-5-(3-(trimethylsilyl)propyl)pyrrolidin-2-one (CAS 437755-13-0)
- 3-Methyl-3H-pyrazolo[3,4-b]pyridine (CAS 877773-22-3)
- 5-Chloro-2-propyl-2H-benzo[f]isoindole-4,9-dione (CAS 89479-39-0)
- 5339-85-5 o-Aminophenethyl alcohol Benzeneethanol, 2-amino- (9CI) AI3-18009 2-(o-Aminophenyl)ethanol EINECS 226-275-9 NSC 3572 Phenethyl alcohol, o-amino- (CAS 5339-85-5)
- Nafamostat impurity 108 (CAS CATO-C4X-1332108)
- Semaglutide Impurity 2 (CAS CATO-C4X-22262)
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