Methyl 2-(4-chloro-3-ethylphenyl)-2-oxoacetate CAS 1443311-95-2
| CAS No. | 1443311-95-2 |
| Molecular Formula | C11H11ClO3 |
| Molecular Weight | 226.66 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 226.66 g/mol gives Methyl 2-(4-chloro-3-ethylphenyl)-2-oxoacetate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Methyl 2-(4-chloro-3-ethylphenyl)-2-oxoacetate (CAS 1443311-95-2), a certified reference material (molecular formula C11H11ClO3, MW 226.66 g/mol) for analytical method development and quality control.
Structurally, Methyl 2-(4-chloro-3-ethylphenyl)-2-oxoacetate (C11H11ClO3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 226.66 g/mol, it falls into the medium-molecular-weight range. 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.
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 | C11H11ClO3 |
| Molecular Weight | 226.66 g/mol |
| Appearance | Off-white to pale 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 methanol, ethanol, 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1992 |
| Halogen Content | Cl-containing |
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Recommended Standards
- Methyl 2-(4-chloro-3,5-dimethylphenyl)-2-oxoacetate (CAS 1443307-47-8)
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- 2-(1-Phenyl-3-(piperidin-1-yl)propyl)pyridine (CAS 102008-18-4)
- Fudosteine impurity 50 (CAS CATO-C4X-144750)
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