4-(4-Bromophenoxy)benzoic acid CAS 21120-68-3
| CAS No. | 21120-68-3 |
| Molecular Formula | C13H9BrO3 |
| Molecular Weight | 293.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-(4-Bromophenoxy)benzoic acid is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 4-(4-Bromophenoxy)benzoic acid (CAS 21120-68-3), a certified reference material (molecular formula C13H9BrO3, MW 293.11 g/mol) for analytical method development and quality control.
4-(4-Bromophenoxy)benzoic acid (C13H9BrO3) 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, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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), 4-(4-Bromophenoxy)benzoic 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 | C13H9BrO3 |
| Molecular Weight | 293.11 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Halogen Content | Br-containing |
Related Bromophenoxy Standards
- 2-(3-Bromophenoxy)benzoic acid (CAS 1021245-85-1)
- 2-(2-Bromophenoxy)benzoic acid (CAS 917477-33-9)
- 2-(4-Bromophenoxy)benzoic acid (CAS 74744-77-7)
- 3-(4-Bromophenoxy)benzoic acid (CAS 77317-51-2)
- 4-(2-Bromophenoxy)benzoic acid (CAS 86607-80-9)
- 4-(3-Bromophenoxy)benzoic acid (CAS 347173-46-0)
- 6-(4-Bromophenoxy)nicotinamide (CAS 1016671-78-5)
- 2-(4-Bromophenoxy)nicotinamide (CAS 1017096-28-4)
Recommended Standards
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