| CAS No. | 339276-17-4 |
| Molecular Formula | C18H11Cl5N2O2S |
| Molecular Weight | 496.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
CATO supplies 2-{[(3,4-dichlorophenyl)methyl]sulfanyl}-5-methoxy-4-(2,4,5-trichlorophenoxy)pyrimidine (CAS 339276-17-4), a certified reference material (molecular formula C18H11Cl5N2O2S, MW 496.62 g/mol) for analytical method development and quality control.
Based on its molecular formula C18H11Cl5N2O2S, 2-{[(3,4-dichlorophenyl)methyl]sulfanyl}-5-methoxy-4-(2,4,5-trichlorophenoxy)pyrimidine contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 496.62 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 | C18H11Cl5N2O2S |
| Molecular Weight | 496.62 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |