| CAS No. | 338775-71-6 |
| Molecular Formula | C20H18ClFN4OS |
| Molecular Weight | 416.90 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
[(E)-2-(3-{[(4-chlorophenyl)methyl]sulfanyl}-6-methyl-1,2,4-triazin-5-yl)ethenyl][(3-fluorophenyl)methoxy]amine (CAS 338775-71-6), molecular formula C20H18ClFN4OS and molecular weight 416.90 g/mol, is a CATO reference standard with documented purity and traceability.
[(E)-2-(3-{[(4-chlorophenyl)methyl]sulfanyl}-6-methyl-1,2,4-triazin-5-yl)ethenyl][(3-fluorophenyl)methoxy]amine (C20H18ClFN4OS) contains a steroid core, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
| Molecular Formula | C20H18ClFN4OS |
| Molecular Weight | 416.90 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |