4-Bromo-2,5-dimethoxyphenol CAS 557757-32-1
| CAS No. | 557757-32-1 |
| Molecular Formula | C8H9BrO3 |
| Molecular Weight | 233.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 233.06 g/mol gives 4-Bromo-2,5-dimethoxyphenol distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 4-Bromo-2,5-dimethoxyphenol (CAS 557757-32-1), a certified reference material (molecular formula C8H9BrO3, MW 233.06 g/mol) for analytical method development and quality control.
Structurally, 4-Bromo-2,5-dimethoxyphenol (C8H9BrO3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 233.06 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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), 4-Bromo-2,5-dimethoxyphenol 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 | C8H9BrO3 |
| Molecular Weight | 233.06 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
| Halogen Content | Br-containing |
Related Bromo Standards
- Methyl 2-(4-bromo-1h-pyrazol-1-yl)propanoate (CAS 1005566-07-3)
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- 3-(4-Bromo-1-methyl-1H-pyrazol-3-yl)propanoic acid (CAS 1006440-27-2)
- 3-(4-Bromo-1-methyl-1h-pyrazol-5-yl)propanoic acid (CAS 1006440-31-8)
- 4-Bromo-1-(propan-2-yl)-1h-pyrazole-3-carboxylic acid (CAS 1006451-37-1)
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- Methyl 3-(4-bromo-1H-pyrazol-1-yl)propanoate (CAS 1007517-46-5)
Recommended Standards
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- 4-Bromo-3,5-dimethyl-1H-pyrazole-1-acetic acid (CAS 312309-43-6)
- 2-Phenyltetrahydro-2H-thiopyran-2-carboxylic acid (CAS 1352495-30-7)
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