4-(4-Chloro-2-methylphenoxy)butyryl chloride CAS 99860-69-2
| CAS No. | 99860-69-2 |
| Molecular Formula | C11H12Cl2O2 |
| Molecular Weight | 247.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 4-(4-Chloro-2-methylphenoxy)butyryl chloride (CAS 99860-69-2), a certified reference material (molecular formula C11H12Cl2O2, MW 247.12 g/mol) for analytical method development and quality control.
Based on its molecular formula C11H12Cl2O2, 4-(4-Chloro-2-methylphenoxy)butyryl chloride contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 247.12 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
As a certified reference material (CRM), 4-(4-Chloro-2-methylphenoxy)butyryl chloride 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 | C11H12Cl2O2 |
| Molecular Weight | 247.12 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; 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 | Cl-containing |
Related Chloro Standards
- 2-(4-Chloro-3,5-dimethylphenoxy)propanoyl chloride (CAS 1160257-38-4)
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- 2-(2-Chloro-5-methylphenoxy)-2-methylpropanoyl chloride (CAS 1160257-72-6)
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- 6-Chloro-8-(2-chloroethyl)-3,4-dihydro-2h-1,5-benzodioxepine (CAS 1339128-13-0)
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Recommended Standards
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- 4-Butoxy-3,5-dichloro-benzaldehyde (CAS 50906-43-9)
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- 4-Bromo-2-(bromodifluoromethyl)-1H-benzo[d]imidazole (CAS 2366994-44-5)
- 3-Phenyl-1,2-dihydroquinoxaline-2-carboxylic acid (CAS 1218060-77-5)
- Ethyl 7-bromo-3-chlorobenzo[4,5]imidazo[1,2-a]pyrimidine-2-carboxylate (CAS 1956334-45-4)
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- Semaglutide impurity 45 (CAS CATO-C4X-222645)
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