| CAS No. | 339278-81-8 |
| Molecular Formula | C18H13Cl3N2S2 |
| Molecular Weight | 427.80 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 427.80 g/mol gives 4-{[(4-chlorophenyl)sulfanyl]methyl}-6-[(2,6-dichlorophenyl)sulfanyl]-2-methylpyrimidine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4-{[(4-chlorophenyl)sulfanyl]methyl}-6-[(2,6-dichlorophenyl)sulfanyl]-2-methylpyrimidine (CAS 339278-81-8), molecular formula C18H13Cl3N2S2 and molecular weight 427.80 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, chlorine substitution, 4-{[(4-chlorophenyl)sulfanyl]methyl}-6-[(2,6-dichlorophenyl)sulfanyl]-2-methylpyrimidine is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 427.80 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
As a certified reference material (CRM), 4-{[(4-chlorophenyl)sulfanyl]methyl}-6-[(2,6-dichlorophenyl)sulfanyl]-2-methylpyrimidine 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 | C18H13Cl3N2S2 |
| Molecular Weight | 427.80 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) | 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 | 2 |