2,3,5,6-Tetrafluoro-4-(phenylsulfonyl)pyridine CAS 23449-67-4
| CAS No. | 23449-67-4 |
| Molecular Formula | C11H5F4NO2S |
| Molecular Weight | 291.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C11H5F4NO2S, 2,3,5,6-Tetrafluoro-4-(phenylsulfonyl)pyridine contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 291.22 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
2,3,5,6-Tetrafluoro-4-(phenylsulfonyl)pyridine (CAS 23449-67-4), molecular formula C11H5F4NO2S and molecular weight 291.22 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C11H5F4NO2S |
| Molecular Weight | 291.22 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Tetrafluoro Standards
- 2,3,4,5-Tetrafluoro-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline (CAS 2657617-90-6)
- 2,3,4,5-Tetrafluoro-6-iodoaniline (CAS 1228813-89-5)
- 2,3,4,6-Tetrafluoro-5-iodoaniline (CAS 923294-22-8)
- 2,3,5,6-Tetrafluoro-4-Iodo-Phenol (CAS 1998-58-9)
- 1,1,2,2-Tetrafluoro-1,2-bis(4-fluorophenyl)ethane (CAS 4100-99-6)
- 1,1,2,2-Tetrafluoro-2-(phenylthio)ethane-1-sulfonyl fluoride (CAS 1000294-01-8)
- 1,2,4,5-Tetrafluoro-3,6-bis(trifluoromethyl)benzene (CAS 651-89-8)
- Tetrafluoro-1,3-bis(trifluoromethyl)benzene (CAS 319-82-4)
Recommended Standards
- 2-(Cyclohex-1-en-1-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazole (CAS 2096336-87-5)
- 3-((2-Cyano-4-nitrophenyl)amino)pyrazine-2,5-dicarbonitrile (CAS 918410-41-0)
- 2-(3-Fluoro-4-(trifluoromethyl)phenyl)thiazole-4-carboxylic acid (CAS 937602-43-2)
- 3,5-Dimethyl-1-((perfluorophenyl)methyl)-1h-pyrazol-4-amine (CAS 895929-03-0)
- Methyl 6-aminoisochromane-3-carboxylate (CAS 1824418-12-3)
- 1-(4-(2-Oxo-2-(pyrrolidin-1-yl)ethyl)piperazin-1-yl)-3-(3,4,5-trimethoxyphenyl)prop-2-en-1-one (CAS 23887-46-9)
- 1-Ethylanthracene (CAS 66291-35-8)
- N-Benzyl-2-[(4-bromophenyl)sulfanyl]-N-(4-methoxyphenyl)acetamide (CAS 860788-19-8)
- 1402148-97-3 tert-Butyl 2-(2,2,2-trifluoro-1-hydroxyethyl)-1H-indole-1-carboxylate (CAS 1402148-97-3)
- Dapagliflozin Impurity 193 (CAS CATO-C4X-1138193)
- lithium(1+) ion 2-bromo-1-ethyl-1H-imidazole-5-carboxylate (CAS 1989671-44-4)
- N-(1-Cyano-1-cyclopropylethyl)-2-((5-((2-ethoxyphenyl)amino)-1,3,4-thiadiazol-2-yl)thio)acetamide (CAS 863420-67-1)
- 4-Chloro-N-(3,4-dimethoxybenzyl)aniline (CAS 13159-76-7)
- Semaglutide impurity 251 (CAS CATO-C4X-2226251)
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