| CAS No. | 338759-70-9 |
| Molecular Formula | C20H16Cl2N4S2 |
| Molecular Weight | 447.40 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
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.
4-(5-((3,4-Dichlorobenzyl)thio)-4-ethyl-4H-1,2,4-triazol-3-yl)-2-phenylthiazole (CAS 338759-70-9), molecular formula C20H16Cl2N4S2 and molecular weight 447.40 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-(5-((3,4-Dichlorobenzyl)thio)-4-ethyl-4H-1,2,4-triazol-3-yl)-2-phenylthiazole (C20H16Cl2N4S2) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 14.0, corresponding to approximately 14 ring(s) or double-bond equivalent(s). With a molecular weight of 447.40 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
| Molecular Formula | C20H16Cl2N4S2 |
| Molecular Weight | 447.40 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 2 |