3-Bromo-4,5-dimethoxyphenol CAS 93092-14-9
| CAS No. | 93092-14-9 |
| Molecular Formula | C8H9BrO3 |
| Molecular Weight | 233.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
3-Bromo-4,5-dimethoxyphenol (CAS 93092-14-9), molecular formula C8H9BrO3 and molecular weight 233.06 g/mol, is a CATO reference standard with documented purity and traceability.
3-Bromo-4,5-dimethoxyphenol (C8H9BrO3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | 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.) | 1983 |
| Halogen Content | Br-containing |
Related Bromo Standards
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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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Recommended Standards
- 3-Bromo-2,5-dimethoxyphenol (CAS 202735-34-0)
- 3-Bromo-6-methoxy-6,7-dihydro-5H-pyrazolo[5,1-b][1,3]oxazine (CAS 2090313-24-7)
- 3-(4-Bromo-5-methyl-1H-pyrazol-1-yl)propanoic acid (CAS 956396-56-8)
- 3-Bromo-N-(5-methylisoxazol-3-yl)propanamide (CAS 349442-99-5)
- 4-((P-tolylamino)methyl)benzohydrazide (CAS 1071400-83-3)
- 1-(5-Bromo-2,3-difluorophenyl)pyrrolidine (CAS 1704067-47-9)
- 6-Bromo-2-chloronicotinamide (CAS 1807028-68-7)
- 4-(Aminomethyl)-5-(difluoromethyl)-3-(trifluoromethyl)pyridin-2-amine (CAS 1805228-63-0)
- 2-Morpholino-N-(3-(pyrazin-2-yloxy)phenyl)acetamide (CAS 866157-09-7)
- 2-(2-(2-Hydroxyphenyl)-4,5-dihydrothiazol-4-yl)-3,4-dimethylthiazolidine-4-carboxylic acid (CAS 124508-94-7)
- N-Boc-5-methylpyrrolidine-2,4-dione (CAS 1450828-51-9)
- 2-(Isoquinolin-4-yl)-2-methylpropanoic acid (CAS 1341487-77-1)
- Daclatasvir Impurity 21 (CAS 1312335-97-9)
- (Des-Thr7)-Glucagon trifluoroacetate salt (CAS 1802078-28-9)
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