4,5-Dibromo-2-methoxyphenol CAS 38926-86-2
| CAS No. | 38926-86-2 |
| Molecular Formula | C7H6Br2O2 |
| Molecular Weight | 281.93 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4,5-Dibromo-2-methoxyphenol (CAS 38926-86-2), molecular formula C7H6Br2O2 and molecular weight 281.93 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 4,5-Dibromo-2-methoxyphenol (C7H6Br2O2) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, 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.
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 | C7H6Br2O2 |
| Molecular Weight | 281.93 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; 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.) | 1968 |
| Halogen Content | Br-containing |
Related Dibromo Standards
- 4,5-Dibromo-2-ethylpyridazin-3(2H)-one (CAS 103977-71-5)
- 3,5-Dibromo-6-methoxypyridin-2-amine (CAS 1261269-56-0)
- 3,5-Dibromo-4-methoxypyridin-2-amine (CAS 1261269-82-2)
- 2,3-Dibromo-4-methoxyphenol (CAS 1266379-51-4)
- 3,5-Dibromo-2-methoxypyridin-4-amine (CAS 1393563-12-6)
- 2,5-Dibromo-3-methoxyphenol (CAS 1782369-05-4)
- 4,6-Dibromo-2-methoxypyridin-3-amine (CAS 1949816-22-1)
- 2,3-dibromo-5H,6H,8H-imidazo[2,1-c][1,4]oxazine (CAS 2044713-57-5)
Recommended Standards
- 4,5-dibromo-1-ethyl-1H-imidazole-2-carbaldehyde (CAS 2060035-12-1)
- 5,6-Dibromo-2-methyl-2,3-dihydroimidazo[2,1-b]oxazole (CAS 591254-77-2)
- 3,5-Dibromo-4-(hydroxymethyl)phenol (CAS 861779-75-1)
- Crisaborole Impurity 40 (CAS 2737-21-5)
- 3-Chloro-5-cyclopropoxybenzenesulfonamide (CAS 1243457-36-4)
- 3-Methylamino-1,2-propanediol (CAS 40137-22-2)
- Imidazo[1,2-a]quinoxaline (CAS 235-05-2)
- 1-(3-(1H-Imidazol-1-yl)propyl)-4-(3-fluoro-4-methoxybenzoyl)-3-hydroxy-5-(3-nitrophenyl)-1H-pyrrol-2(5H)-one (CAS 618072-93-8)
- 2-Trifluoromethoxy-3-(trifluoromethyl)benzonitrile (CAS 1803862-25-0)
- 1-(2,3-Difluorobenzyl)-1h-1,2,4-triazol-3-amine (CAS 1182777-12-3)
- 3-(Pentan-2-yloxy)aniline (CAS 27125-87-7)
- Nicergoline Impurity 15 (CAS CATO-C4X-208515)
- Suc-Ala-Ala-Val-pNA (CAS 61043-47-8)
- Neuropeptide Y (22-36) (CAS 119019-65-7)
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