Ethyl 2-((5-fluoro-2-methoxyphenyl)thio)-2-oxoacetate CAS 1443342-22-0
| CAS No. | 1443342-22-0 |
| Molecular Formula | C11H11FO4S |
| Molecular Weight | 258.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Ethyl 2-((5-fluoro-2-methoxyphenyl)thio)-2-oxoacetate (CAS 1443342-22-0), molecular formula C11H11FO4S and molecular weight 258.27 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C11H11FO4S, Ethyl 2-((5-fluoro-2-methoxyphenyl)thio)-2-oxoacetate contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 258.27 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.
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.
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 | C11H11FO4S |
| Molecular Weight | 258.27 g/mol |
| 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 | F-containing |
| Sulfur Atoms | 1 |
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Recommended Standards
- (3aS,6R,6aS)-6-((R)-2,2-Dimethyl-1,3-dioxolan-4-yl)-2,2-dimethyldihydrofuro[3,4-d][1,3]dioxol-4(3aH)-one (CAS 14440-56-3)
- N-(4-Methoxybenzyl)-4-nitroaniline (CAS 142599-41-5)
- Rotundatin (CAS 144506-16-1)
- 1-((1H-Indol-3-yl)methyl)-5-oxopyrrolidine-2-carboxylic acid (CAS 1424839-66-6)
- 5-Fluoro-2-morpholinobenzoic Acid (CAS 1096880-75-9)
- Ethyl (1S,2R)-4-amino-2-methylcyclohexane-1-carboxylate (CAS 2306259-21-0)
- 1-(2,3-Dichlorobenzenesulfonyl)piperazine (CAS 733030-77-8)
- 5-Fluoro-1-methyl-1H-indazole-6-boronic acid (CAS 2096331-06-3)
- 1-(4-Fluorophenyl)-3-phenoxypropan-1-one (CAS 92451-94-0)
- 2-Chloro-4-methylamino-6-sec-butylamino-s-triazine (CAS 33692-99-8)
- 2-(2,5-Dioxoimidazolidin-4-ylidene)acetic acid (CAS 5427-28-1)
- Methyl 2,3-dibromo-3-phenylpropanoate (CAS 21770-48-9)
- 4-((4-(Tert-butyl)thiazol-2-yl)methoxy)benzoic acid (CAS 1017371-82-2)
- Insulin Degludec Impurity 25 (CAS CATO-C4X-215725)
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