3-Bromo-5-(pyridin-3-yl)-1,2,4-oxadiazole CAS 1447958-24-8
| CAS No. | 1447958-24-8 |
| Molecular Formula | C7H4BrN3O |
| Molecular Weight | 226.03 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C7H4BrN3O, 3-Bromo-5-(pyridin-3-yl)-1,2,4-oxadiazole contains an amide group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 226.03 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
3-Bromo-5-(pyridin-3-yl)-1,2,4-oxadiazole (CAS 1447958-24-8), molecular formula C7H4BrN3O and molecular weight 226.03 g/mol, is a CATO reference standard with documented purity and traceability.
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C7H4BrN3O |
| Molecular Weight | 226.03 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.) | 1992 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 3 |
Related Bromo Standards
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- 4-Bromo-2-cyanobenzoic Acid (CAS 1223434-16-9)
- 2-Bromo-1-ethynyl-4-nitrobenzene (CAS 1260813-94-2)
- 2-Bromo-6-cyanobenzoic acid (CAS 1261446-05-2)
- 2-Bromo-3-cyanobenzoic acid (CAS 1261473-60-2)
- 3-Bromo-2-cyanobenzoic acid (CAS 1261790-96-8)
- 1-Bromo-3-ethynyl-5-nitrobenzene (CAS 1286734-53-9)
- 3-bromo-6H-pyrido[2,3-d]pyridazin-5-one (CAS 1426245-35-3)
Recommended Standards
- 3-Bromo-5-(pyridin-4-yl)-1,2,4-oxadiazole (CAS 1447949-52-1)
- 3-Bromo-5-(pyridin-2-yl)-1,2,4-oxadiazole (CAS 1447958-32-8)
- 6-Bromopyrido[2,3-b]pyrazin-3(4H)-one (CAS 1432059-11-4)
- 6-Bromopyrido[2,3-d]pyrimidin-4(3H)-one (CAS 155690-79-2)
- 2',3',4,4',5',6'-Hexafluoro-[1,1'-biphenyl]-2-carboxylic acid (CAS 1261836-24-1)
- tert-Butyl(R)-4-(aminomethyl)thiazolidine-3-carboxylate (CAS 391248-13-8)
- 2,4-Dichloro-5-[(pentan-2-yl)sulfamoyl]benzoic acid (CAS 743451-65-2)
- 5,6,7,8-Tetrahydroisoquinoline-3-carboxylic acid (CAS 26862-56-6)
- tert-Butyl (2-chloro-4-cyanobenzyl)carbamate (CAS 939980-27-5)
- Cholecalciferol impurity 22 (CAS CATO-C4X-158622)
- 4-[4-(methylsulfanyl)phenyl]-4-oxobutanoic acid (CAS 7028-67-3)
- Ethyl 4-(diethoxymethyl)benzoate (CAS 35848-99-8)
- 4-bromo-N-methoxy-N-methylbenzamide (CAS 192436-83-2)
- Semaglutide impurity 26 (CAS CATO-C4X-222626)
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