2-Bromo-4,5-dihydroxybenzoic acid CAS 61203-47-2
| CAS No. | 61203-47-2 |
| Molecular Formula | C7H5BrO4 |
| Molecular Weight | 233.02 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Bromo-4,5-dihydroxybenzoic acid (CAS 61203-47-2), molecular formula C7H5BrO4 and molecular weight 233.02 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C7H5BrO4, 2-Bromo-4,5-dihydroxybenzoic acid contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 233.02 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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), 2-Bromo-4,5-dihydroxybenzoic acid 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 | C7H5BrO4 |
| Molecular Weight | 233.02 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, water |
| 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.) | 1974 |
| Halogen Content | Br-containing |
Related Bromo Standards
- Methyl 5-bromo-2-formylfuran-3-carboxylate (CAS 1006598-64-6)
- 4-Bromo-6-methyl-2-nitropyridin-3-ol (CAS 1022250-67-4)
- 2-Bromo-4,6-dihydroxybenzoic acid (CAS 1037751-00-0)
- 3-Bromo-4-methyl-5-nitro-2-pyridinone (CAS 1049706-72-0)
- 3-Bromo-4-methyl-5-nitropyridin-2(3H)-one (CAS 1049706-72-2)
- 6-Bromo-3-hydroxy-4-methyl-2-nitropyridine (CAS 1303587-93-0)
- 2-Bromo-3-methoxy-5-nitropyridine (CAS 1353101-84-4)
- 5-Bromo-3-methoxy-2-nitropyridine (CAS 152684-26-9)
Recommended Standards
- 2-Bromo-3-methoxy-6-nitropyridine (CAS 76066-07-4)
- 2-Bromo-5-methyl-4-nitropyridin-3-ol (CAS 2869955-53-1)
- 2-Amino-5-bromo-3-nitrophenol (CAS 867338-56-5)
- 2-Bromo-6-methoxy-3-nitropyridine (CAS 344296-05-5)
- 4-(1-Pyrrolidylmethyl)phenylboronic Acid (CAS 1036991-20-4)
- 1-(3,4-Difluorobenzyl)-1H-pyrazol-4-ol (CAS 1603188-42-6)
- 2-Cyclobutyl-2-fluoroacetic acid (CAS 1527583-05-6)
- Cefuroxime Oxide Impurity 2 (CAS CATO-C4X-124516)
- 4-(4-hydroxyphenyl)benzo[b]thiophene-7-carbaldehyde (CAS 799766-04-4)
- 2-[(4-Iodobenzoyl)amino]acetic acid (CAS 55790-22-2)
- 5-(Alanyl-3,3,3-d3)-2-methoxybenzenesulfonamide hydrochloride (CAS 1215568-62-9)
- Methyl 4-chloro-3-nitro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate (CAS 2377611-92-0)
- 3-Benzyl-6-hydroxy-7-methoxyquinazolin-4(3H)-one (CAS 808793-56-8)
- Insulin Degludec impurity 4 (CAS CATO-C4X-21574)
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