2,4-Dibromo-5-methoxybenzene-1,3-diol CAS 121869-53-2
| CAS No. | 121869-53-2 |
| Molecular Formula | C7H6Br2O3 |
| Molecular Weight | 297.93 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2,4-Dibromo-5-methoxybenzene-1,3-diol.
CATO supplies 2,4-Dibromo-5-methoxybenzene-1,3-diol (CAS 121869-53-2), a certified reference material (molecular formula C7H6Br2O3, MW 297.93 g/mol) for analytical method development and quality control.
Structurally, 2,4-Dibromo-5-methoxybenzene-1,3-diol (C7H6Br2O3) 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 297.93 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C7H6Br2O3 |
| Molecular Weight | 297.93 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | Br-containing |
Related Dibromo Standards
- Ethyl 3,5-dibromo-1H-pyrazole-4-carboxylate (CAS 1017802-86-6)
- Methyl 2,4-dibromo-1-methyl-1H-imidazole-5-carboxylate (CAS 120809-55-4)
- methyl 4,5-dibromo-1-methyl-imidazole-2-carboxylate (CAS 1379366-66-1)
- 2,3-Dibromo-5,6-dimethoxypyrazine (CAS 2385836-13-3)
- 3,4-Dibromo-5-(hydroxymethyl)benzene-1,2-diol (CAS 4950-06-5)
- Ethyl 2,5-dibromo-1H-imidazole-4-carboxylate (CAS 74478-96-9)
- 2-(3,5-Dibromo-1H-1,2,4-triazol-1-yl)-N-methylacetamide (CAS 919267-26-8)
- 3-(3,5-Dibromo-1H-1,2,4-triazol-1-yl)propanamide (CAS 933551-28-1)
Recommended Standards
- 5-Bromo-2-iodoaniline (CAS 64085-52-5)
- 2,4-Dichloro-5-(pyridin-3-ylmethoxy)phenylboronic acid (CAS 2096337-24-3)
- 5-Bromo-2-iodo-3-picoline (CAS 376587-52-9)
- 4-Bromo-3-iodoaniline (CAS 63037-64-9)
- 1-Ethyl-N-(5-methylisoxazol-3-yl)-1H-pyrazole-4-carboxamide (CAS 515122-60-8)
- 2-(Tetrahydro-2H-pyran-4-yl)-4-oxazolecarboxylic acid (CAS 955401-82-8)
- 4-Chloro-3-(4-methoxyphenyl)-6-(trifluoromethyl)-[1,2,3]triazolo[1,5-a]pyridine (CAS 1400872-35-6)
- Ethyl 3-Bromoimidazo[1,2-a]pyridine-7-carboxylate (CAS 1315362-84-5)
- 1,2,3,4,6-Penta-O-trimethylsilyl-D-mannopyranoside (CAS 55529-69-6)
- S-trans-Phenmetrazine (CAS 57919-12-7)
- 4-Bromo-1-(tetrahydrofuran-3-yl)-1h-pyrazol-3-amine (CAS 1343030-30-7)
- N-Ethyl-1H-imidazole-4-carboxamide (CAS 137480-25-2)
- 4-(8-Chloroimidazo[1,5-a]pyrazin-3-yl)morpholine (CAS 1427501-99-2)
- Peptide Impurity 28 (CAS 1350456-64-2)
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