3,4-Dichloro-5-methylphenacyl bromide CAS 1806288-57-2
| CAS No. | 1806288-57-2 |
| Molecular Formula | C9H7BrCl2O |
| Molecular Weight | 281.96 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3,4-Dichloro-5-methylphenacyl bromide (CAS 1806288-57-2), molecular formula C9H7BrCl2O and molecular weight 281.96 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a hydroxyl group, an ether linkage, chlorine/bromine substitution, an aromatic ring system, 3,4-Dichloro-5-methylphenacyl bromide is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 281.96 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
As a certified reference material (CRM), 3,4-Dichloro-5-methylphenacyl bromide 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.
Physical & Chemical Properties
| Molecular Formula | C9H7BrCl2O |
| Molecular Weight | 281.96 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | Cl/Br-containing |
Related Dichloro Standards
- 2,3-Dichloro-5-methylphenacyl bromide (CAS 1803780-00-8)
- 2,6-Dichloro-4-methylphenacyl bromide (CAS 1803824-51-2)
- 3,5-Dichloro-4-methylphenacyl bromide (CAS 1803824-56-7)
- 2,5-Dichloro-4-methylphenacyl bromide (CAS 1803836-64-7)
- 3,5-Dichloro-2-methylphenacyl bromide (CAS 1806284-57-0)
- 2,5-Dichloro-3-methylphenacyl bromide (CAS 1806304-44-8)
- 2,4-Dichloro-5-methylphenacyl bromide (CAS 1806347-72-7)
- 2,4-Dichloro-6-methylphenacyl bromide (CAS 1807180-68-2)
Recommended Standards
- 1-bromo-3-(2,4-dichlorophenyl)propan-2-one (CAS 651358-40-6)
- 1-Bromo-3-(3,4-dichlorophenyl)propan-2-one (CAS 651358-41-7)
- Bupropion Impurity 20 (CAS 1261791-08-5)
- 2-Bromo-1-(3,4-dichlorophenyl)propan-1-one (CAS 87427-61-0)
- 2-Ethyl-4-ethynylpyridine (CAS 1215782-60-7)
- 4-Fluoro-6-nitroisoquinolin-1-ol (CAS 1508295-22-4)
- 4,3':6',2":5",4'"-Quaterpyridine (CAS 2043946-53-6)
- (1S,3S)-(3-Hydroxymethyl-cyclohexyl)-carbamic acid tert-butyl ester (CAS 2165427-41-6)
- Ethyl 4-(dimethylamino)-6,8-dimethylquinoline-3-carboxylate (CAS 1171932-56-1)
- 4-Bromo-7-ethoxy-1H-indazole (CAS 1351668-22-8)
- Peramivir Impurity 16 DiHCl (CAS 2641684-79-7（HCl）)
- Marbofloxacin EP Impurity B (CAS 115551-41-2)
- Hemimellitic Acid (CAS 569-51-7)
- Semaglutide Impurity 160 (x TFA Salt) (CAS CATO-C4X-2226160)
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