4-(2,5-Dichlorophenoxy)benzoic acid CAS 938228-47-8
| CAS No. | 938228-47-8 |
| Molecular Formula | C13H8Cl2O3 |
| Molecular Weight | 283.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 4-(2,5-Dichlorophenoxy)benzoic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
4-(2,5-Dichlorophenoxy)benzoic acid (CAS 938228-47-8), molecular formula C13H8Cl2O3 and molecular weight 283.11 g/mol, is a CATO reference standard with documented purity and traceability.
4-(2,5-Dichlorophenoxy)benzoic acid (C13H8Cl2O3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine 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.
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.
Physical & Chemical Properties
| Molecular Formula | C13H8Cl2O3 |
| Molecular Weight | 283.11 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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.) | 1987 |
| Halogen Content | Cl-containing |
Related Dichlorophenoxy Standards
- 4-(2,3-dichlorophenoxy)benzoic acid (CAS 1040084-01-2)
- 2-(2,4-Dichlorophenoxy)benzoic acid (CAS 86308-86-3)
- 2-{3-[(2,4-dichlorophenoxy)methyl]-1H-1,2,4-triazol-5-yl}acetonitrile (CAS 338395-57-6)
- 4-(2,4-Dichlorophenoxy)benzoic acid (CAS 925005-04-5)
- 6-(2,3-dichlorophenoxy)pyridine-3-carboxylic acid (CAS 1019451-16-1)
- 6-(3,4-Dichlorophenoxy)pyridine-2-carboxylic acid (CAS 143028-31-3)
- 2-(2,4-Dichlorophenoxy)pyridine-3-carboxylic acid (CAS 36701-91-4)
- 4-(1-(2,4-Dichlorophenoxy)ethyl)pyrimidin-2-amine (CAS 338976-08-2)
Recommended Standards
- 4-(4-Oxopiperidine-1-sulfonyl)phenylboronic acid (CAS 2377607-85-5)
- 4-(2,4-Dichlorobenzoyl)-1H-pyrrole-2-carboxamide (CAS 339023-64-2)
- 5-Bromo-1-fluoro-2-methoxy-3-(methylsulfonyl)benzene (CAS 2411493-34-8)
- 4-(2,3-Dichlorobenzoyl)-1H-pyrrole-2-carboxamide (CAS 338753-53-0)
- 2H-Isoxazolo[4,5-f]isoindole (CAS 118716-69-1)
- N-(4-((6-Ethoxy-2-methylpyrimidin-4-yl)amino)phenyl)propionamide (CAS 946355-27-7)
- Propane-1,1,1,2,2,3,3-d (CAS 97565-91-8)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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