| CAS No. | 685504-95-4 |
| Molecular Formula | C18H13ClFN3OS |
| Molecular Weight | 373.83 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
2-((5-Chloro-6-methyl-2-(pyridin-2-yl)pyrimidin-4-yl)thio)-1-(4-fluorophenyl)ethan-1-one (CAS 685504-95-4), molecular formula C18H13ClFN3OS and molecular weight 373.83 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C18H13ClFN3OS, 2-((5-Chloro-6-methyl-2-(pyridin-2-yl)pyrimidin-4-yl)thio)-1-(4-fluorophenyl)ethan-1-one contains a steroid core, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, fluorine/chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 373.83 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 2-((5-Chloro-6-methyl-2-(pyridin-2-yl)pyrimidin-4-yl)thio)-1-(4-fluorophenyl)ethan-1-one meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
| Molecular Formula | C18H13ClFN3OS |
| Molecular Weight | 373.83 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |