(4-(4-Fluorophenyl)-1,1-dioxido-4H-benzo[b][1,4]thiazin-2-yl)(piperidin-1-yl)methanone CAS 1251580-54-7
| CAS No. | 1251580-54-7 |
| Molecular Formula | C20H19FN2O3S |
| Molecular Weight | 386.44 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
(4-(4-Fluorophenyl)-1,1-dioxido-4H-benzo[b][1,4]thiazin-2-yl)(piperidin-1-yl)methanone (CAS 1251580-54-7), molecular formula C20H19FN2O3S and molecular weight 386.44 g/mol, is a CATO reference standard with documented purity and traceability.
(4-(4-Fluorophenyl)-1,1-dioxido-4H-benzo[b][1,4]thiazin-2-yl)(piperidin-1-yl)methanone (C20H19FN2O3S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
Physical & Chemical Properties
| Molecular Formula | C20H19FN2O3S |
| Molecular Weight | 386.44 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Fluorophenyl Standards
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Recommended Standards
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