5-Bromo-2-(isoxazol-5-yl)phenol CAS 876149-58-5
| CAS No. | 876149-58-5 |
| Molecular Formula | C9H6BrNO2 |
| Molecular Weight | 240.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 5-Bromo-2-(isoxazol-5-yl)phenol 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.
5-Bromo-2-(isoxazol-5-yl)phenol (CAS 876149-58-5), molecular formula C9H6BrNO2 and molecular weight 240.05 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5-Bromo-2-(isoxazol-5-yl)phenol (C9H6BrNO2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 240.05 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C9H6BrNO2 |
| Molecular Weight | 240.05 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
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Recommended Standards
- 5-Bromo-2-(hydroxyimino)-2,3-dihydro-1H-inden-1-one (CAS 942935-69-5)
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- 5-Bromo-2-(cyanomethyl)benzoic acid (CAS 942935-79-7)
- 5-Bromo-2-oxoindoline-7-carbaldehyde (CAS 2089311-07-7)
- 4-(2-Chlorobenzoyl)-1H-pyrrole-2-carboxamide (CAS 338976-88-8)
- 5-Cyclobutoxypyrazine-2-carboxylic acid (CAS 1340353-76-5)
- 2-(1-Aminoethyl)-3-bromo-7-fluoro-4H-pyrido[1,2-a]pyrimidin-4-one (CAS 918422-25-0)
- 1-bromo-3-tetrahydrofuran-3-yl-propan-2-one (CAS 1936206-28-8)
- (E)-3-(1-methylpyrazol-3-yl)prop-2-enoic acid (CAS 1445894-12-1)
- 5-(4-Fluorophenyl)-3-(3-nitrophenyl)-1,2,4-oxadiazole (CAS 421581-70-6)
- (S)-2,2,2-trifluoro-1-p-tolylethanamine (CAS 1187930-94-4)
- 1-(4-Hydroxypiperidin-1-yl)-3,3-dimethylbutan-1-one (CAS 1090820-28-2)
- N-(Benzo[d]thiazol-2-yl)-5-(N-(thiophen-2-ylmethyl)sulfamoyl)furan-2-carboxamide (CAS 1171809-87-2)
- D-Ile17-Tirzepatide (CAS CATO-CPTD788917)
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