3-bromo-2,5-dimethoxybenzoic acid CAS 100940-12-3
| CAS No. | 100940-12-3 |
| Molecular Formula | C9H9BrO4 |
| Molecular Weight | 261.07 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 261.07 g/mol gives 3-bromo-2,5-dimethoxybenzoic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
3-bromo-2,5-dimethoxybenzoic acid (CAS 100940-12-3), molecular formula C9H9BrO4 and molecular weight 261.07 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 3-bromo-2,5-dimethoxybenzoic acid (C9H9BrO4) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
As a certified reference material (CRM), 3-bromo-2,5-dimethoxybenzoic 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 | 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.) | 1985 |
| Halogen Content | Br-containing |
Related bromo Standards
- 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)
- 2-(3-Bromo-5-methoxyphenyl)-2-hydroxyacetic acid (CAS 1261616-74-3)
Recommended Standards
- Methazole (CAS 20354-26-1)
- 4-Amino-5-bromo-6-ethoxypicolinic acid (CAS 1057260-48-6)
- 2＇-Iodoacetanilide (CAS 19591-17-4)
- N-(4-Iodophenyl)acetamide (CAS 622-50-4)
- DX-9065a Hydrochloride Pentahydrate (CAS 155204-81-2)
- 3-Chloro-4-fluoro-2-(trifluoromethyl)pyridine (CAS 1227599-02-1)
- 4-Bromo-6-chloro-2-trifluoromethylphenol (CAS 1414870-65-7)
- (S)-tert-Butyl 2-((2-amino-N-ethylacetamido)methyl)pyrrolidine-1-carboxylate (CAS 1354009-06-5)
- Abrocitinib Impurity 40 (CAS CATO-C4X-288440)
- Naloxone (CAS 465-65-6)
- 4-Methyl-N-(2-thioxo-1-(triphenylphosphoranylidene)ethyl)benzamide (CAS 90283-68-4)
- (E)-3-(2-(1-Methyl-1,4,5,6-tetrahydropyrimidin-2-yl)vinyl)phenol (CAS 36531-26-7)
- 1-Bromo-3-chloro-5-(chloromethyl)benzene (CAS 1060812-67-0)
- Semaglutide impurity 66 (CAS CATO-C4X-222666)
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