1-Bromo-2,5-dichloro-4-methoxybenzene CAS 55026-90-9
| CAS No. | 55026-90-9 |
| Molecular Formula | C7H5BrCl2O |
| Molecular Weight | 255.92 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1-Bromo-2,5-dichloro-4-methoxybenzene (CAS 55026-90-9), molecular formula C7H5BrCl2O and molecular weight 255.92 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 1-Bromo-2,5-dichloro-4-methoxybenzene (C7H5BrCl2O) is characterized by a hydroxyl group, an ether linkage, chlorine/bromine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
As a certified reference material (CRM), 1-Bromo-2,5-dichloro-4-methoxybenzene 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 | C7H5BrCl2O |
| Molecular Weight | 255.92 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1972 |
| Halogen Content | Cl/Br-containing |
Related Bromo Standards
- 1-Bromo-2,3-dichloro-4-methoxybenzene (CAS 109803-52-3)
- (2-Bromo-4,6-dichlorophenyl)methanol (CAS 115615-21-9)
- (5-Bromo-2,3-dichloro-phenyl)-methanol (CAS 1229245-68-4)
- 1-Bromo-4,5-dichloro-2-methoxybenzene (CAS 174913-15-6)
- 1-Bromo-2,5-dichloro-3-methoxybenzene (CAS 174913-17-8)
- 1-Bromo-2,4-dichloro-3-methoxybenzene (CAS 174913-18-9)
- 1-Bromo-2,3-dichloro-5-methoxybenzene (CAS 174913-19-0)
- 2-Bromo-1,3-dichloro-5-methoxybenzene (CAS 174913-20-3)
Recommended Standards
- (4-Bromo-2,6-dichlorophenyl)methanol (CAS 274671-77-1)
- 2-Bromo-4,6-dichloroanisole (CAS 60633-26-3)
- 4-Bromo-2,6-dichloroanisole (CAS 19240-91-6)
- 2-Bromo-4-chloro-1-(chloromethoxy)benzene (CAS 54258-22-9)
- 1-((4-(Piperidin-4-ylmethyl)phenyl)sulfonyl)piperidine (CAS 333987-64-7)
- 5-(Chloromethyl)-3-cyclohexyl-1,3-oxazolidin-2-one (CAS 26384-66-7)
- (1R,2R)-cyclohex-4-ene-1,2-diamine (CAS 208533-40-8)
- Ethyl 2-hydroxy-6-phenylnicotinate (CAS 58787-26-1)
- N1-Cyclopropyl-N1-(4-fluorobenzyl)ethane-1,2-diamine (CAS 1181593-10-1)
- 8-Bromo-2,3,4,5-tetrahydrobenzo[b]oxepin-5-amine (CAS 1016734-79-4)
- 4-Chloro-1-(2,4-difluorophenyl)butan-1-one (CAS 50528-16-0)
- 5-bromo-2-ethoxy-3-iodobenZaldehyde (CAS 708272-90-6)
- 8-Chloro-1,3-dimethyl-7-(oxiran-2-ylmethyl)-3,7-dihydro-1H-purine-2,6-dione (CAS 114303-79-6)
- Neuropeptide AF (human) (CAS 192387-38-5)
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