7,7-Dioxido-5,6-dihydro-4H-thieno[2,3-b]thiopyran-4-yl 4-fluorobenzoate CAS 343373-66-0
| CAS No. | 343373-66-0 |
| Molecular Formula | C14H11FO4S2 |
| Molecular Weight | 326.36 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 7,7-Dioxido-5,6-dihydro-4H-thieno[2,3-b]thiopyran-4-yl 4-fluorobenzoate (CAS 343373-66-0), a certified reference material (molecular formula C14H11FO4S2, MW 326.36 g/mol) for analytical method development and quality control.
Structurally, 7,7-Dioxido-5,6-dihydro-4H-thieno[2,3-b]thiopyran-4-yl 4-fluorobenzoate (C14H11FO4S2) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 326.36 g/mol, it falls into the moderately-high-molecular-weight range. 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 | C14H11FO4S2 |
| Molecular Weight | 326.36 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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.) | 2025 |
| Halogen Content | F-containing |
| Sulfur Atoms | 2 |
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Recommended Standards
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- 1-[(4-Chlorophenyl)methyl]-3-methyl-4-(4-methylphenyl)-4,5-dihydro-1H-1,2,4-triazol-5-one (CAS 860651-03-2)
- 3,5-Difluoro-4-((tetrahydro-2h-pyran-4-yl)oxy)aniline (CAS 1248914-51-3)
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- N-(5-chloropyridin-2-yl)-4-fluorobenzamide (CAS 327991-18-4)
- C-telopeptide (CAS 162929-64-8)
- Endo-38a-Pro-Exenatide trifluoroacetate salt (CAS 1678416-95-9)
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