3,5-Dibromo-2-methoxybenzoic acid CAS 13130-23-9
| CAS No. | 13130-23-9 |
| Molecular Formula | C8H6Br2O3 |
| Molecular Weight | 309.94 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system, 3,5-Dibromo-2-methoxybenzoic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 309.94 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
CATO supplies 3,5-Dibromo-2-methoxybenzoic acid (CAS 13130-23-9), a certified reference material (molecular formula C8H6Br2O3, MW 309.94 g/mol) for analytical method development and quality control.
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 | C8H6Br2O3 |
| Molecular Weight | 309.94 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 |
| 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.) | 1960 |
| Halogen Content | Br-containing |
Related Dibromo Standards
- 3,5-Dibromo-2-hydroxy-4-methoxybenzaldehyde (CAS 117238-61-6)
- 4,6-Dibromo-2-methyl-3-nitroaniline (CAS 117824-52-9)
- 2,4-Dibromo-6-methyl-3-nitroaniline (CAS 117824-53-0)
- 2,6-Dibromo-4-methyl-3-nitroaniline (CAS 117824-54-1)
- 2,4-Dibromo-5-methoxybenzoic acid (CAS 121789-22-8)
- 4,6-Dibromo-3-methyl-2-nitroaniline (CAS 1326310-78-4)
- Methyl 2,6-dibromo-4-hydroxybenzoate (CAS 176372-55-7)
- 4,5-Dibromo-2-(2-oxopropyl)-2,3-dihydropyridazin-3-one (CAS 186792-10-9)
Recommended Standards
- Ethyl 2,4-dibromopyrimidine-5-carboxylate (CAS 1266480-83-4)
- Methyl 6-bromo-3-(bromomethyl)pyrazine-2-carboxylate (CAS 1260665-22-2)
- Ethyl 3,6-dibromopyrazine-2-carboxylate (CAS 1416439-81-0)
- 4-Chloro-3-(2-chlorophenylcarbamoyl)benzeneboronic acid (CAS 1449132-45-9)
- n-(4-Iodophenyl)-1-methyl-1h-pyrrole-2-carboxamide (CAS 853724-57-9)
- 3,6-Di(pyridin-2-yl)pyridazine (CAS 36901-11-8)
- 5-(4-Bromothiophen-2-yl)oxazol-2-amine (CAS 1368682-85-2)
- Tert-butyl (2S,5S)-2-formyl-5-methylpyrrolidine-1-carboxylate (CAS 1359869-72-9)
- Ethyl 1-ethylpiperidine-3-carboxylate (CAS 57487-93-1)
- 7-chloro-3,4-dihydroisoquinoline (CAS 60518-41-4)
- ((1S,4r)-4-propylcyclohexyl)methanol (CAS 71458-06-5)
- 2-(Aminomethyl)cyclohexan-1-ol hydrochloride (CAS 478841-81-5)
- 3-Chloro-4-hydroxy-N-(5-methylpyridin-2-yl)benzamide (CAS 1017109-71-5)
- Semaglutide impurity 40 (CAS CATO-C4X-222640)
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