2-(3-Bromo-4-hydroxy-5-methoxyphenyl)acetic acid CAS 206559-42-4
| CAS No. | 206559-42-4 |
| Molecular Formula | C9H9BrO4 |
| Molecular Weight | 261.07 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2-(3-Bromo-4-hydroxy-5-methoxyphenyl)acetic acid (CAS 206559-42-4), molecular formula C9H9BrO4 and molecular weight 261.07 g/mol, is a CATO reference standard with documented purity and traceability.
2-(3-Bromo-4-hydroxy-5-methoxyphenyl)acetic acid (C9H9BrO4) 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 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C9H9BrO4 |
| Molecular Weight | 261.07 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2016 |
| Halogen Content | Br-containing |
Related Bromo Standards
- 3-bromo-2,5-dimethoxybenzoic acid (CAS 100940-12-3)
- Methyl 3-bromo-4-hydroxy-5-methoxybenzoate, 97% (CAS 108249-43-0)
- 3-Bromo-5H-cyclopenta[1,2-b:5,4-b']dipyridin-5-one (CAS 1182844-62-7)
- 5-Bromo-2-ethoxy-4-methyl-3-nitropyridine (CAS 1215206-58-8)
- 2-(3-Bromo-4-methoxyphenyl)-2-hydroxyacetic acid (CAS 1226125-24-1)
- 4-Bromo-5-ethoxy-2-nitroaniline (CAS 1242336-59-9)
- 5-Bromo-2-isopropoxy-3-nitropyridine (CAS 1248216-10-5)
- 2-(2-Bromo-4-nitrophenoxy)ethan-1-amine (CAS 1249615-17-5)
Recommended Standards
- 1-Chloro-4-((chlorodifluoromethyl)sulfonyl)benzene (CAS 403496-62-8)
- 2-(4-Bromo-2-(hydroxymethyl)phenoxy)acetic acid (CAS 664319-62-4)
- 1,4-Dichloro-2-((difluoromethyl)sulfonyl)benzene (CAS 199741-30-5)
- 2-(5-Bromo-2-methoxyphenyl)-2-hydroxyacetic acid (CAS 863562-53-2)
- 3-(4-Aminophenyl)-2-oxopropanoic acid (CAS 16921-36-1)
- rac-3-[(2R,5S)-5-(trifluoromethyl)oxolan-2-yl]propanoic acid (CAS 1989638-40-5)
- N-Ethyl-N-[2-(4-methylpiperazin-1-yl)ethyl]amine (CAS 40172-12-1)
- 5-methoxy-2-(2,2,3,3-tetrafluoropropoxy)benzoic acid (CAS 1909313-74-1)
- 5-(Bromomethyl)-2,2-dimethylheptane (CAS 1481772-34-2)
- 3-(5-(2-Chlorophenyl)furan-2-yl)-N-(2-ethylphenyl)acrylamide (CAS 853348-45-5)
- 1-(4-Hydroxy-4-(((4-methoxyphenyl)sulfonyl)methyl)piperidin-1-yl)-3-methylbutan-1-one (CAS 865659-44-5)
- 2-(3-methyl-1H-1,2,4-triazol-5-yl)morpholine (CAS 1249510-08-4)
- 2-(Trimethylsilyl)-2H-1,2,3-triazole (CAS 13518-80-4)
- Des-Val23-Tirzepatide (CAS CATO-CPTD788950)
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