| CAS No. | 791717-22-1 |
| Molecular Formula | C15H11Cl2N3OS |
| Molecular Weight | 352.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
5-((2,3-Dichlorophenoxy)methyl)-4-phenyl-2,4-dihydro-3H-1,2,4-triazole-3-thione (CAS 791717-22-1), molecular formula C15H11Cl2N3OS and molecular weight 352.24 g/mol, is a CATO reference standard with documented purity and traceability.
5-((2,3-Dichlorophenoxy)methyl)-4-phenyl-2,4-dihydro-3H-1,2,4-triazole-3-thione (C15H11Cl2N3OS) contains a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
| Molecular Formula | C15H11Cl2N3OS |
| Molecular Weight | 352.24 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |