| CAS No. | 338954-61-3 |
| Molecular Formula | C12H11ClN2OS2 |
| Molecular Weight | 298.81 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 298.81 g/mol gives 4-((4-Chlorophenyl)thio)-5-methoxy-2-(methylthio)pyrimidine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4-((4-Chlorophenyl)thio)-5-methoxy-2-(methylthio)pyrimidine (CAS 338954-61-3) is a high-purity analytical reference standard with the molecular formula C12H11ClN2OS2 and a molecular weight of 298.81 g/mol.
The molecular framework of 4-((4-Chlorophenyl)thio)-5-methoxy-2-(methylthio)pyrimidine (C12H11ClN2OS2) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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 | C12H11ClN2OS2 |
| Molecular Weight | 298.81 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |