| CAS No. | 438031-57-3 |
| Molecular Formula | C13H8Cl2N4S |
| Molecular Weight | 323.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
The occurrence of 4-(3,4-Dichloro-phenyl)-5-pyridin-3-yl-4H-[1,2,4]triazole-3-thiol is closely related to a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
4-(3,4-Dichloro-phenyl)-5-pyridin-3-yl-4H-[1,2,4]triazole-3-thiol (CAS 438031-57-3) is a high-purity analytical reference standard with the molecular formula C13H8Cl2N4S and a molecular weight of 323.20 g/mol.
The molecular framework of 4-(3,4-Dichloro-phenyl)-5-pyridin-3-yl-4H-[1,2,4]triazole-3-thiol (C13H8Cl2N4S) is characterized by a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, 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 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).
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-(3,4-Dichloro-phenyl)-5-pyridin-3-yl-4H-[1,2,4]triazole-3-thiol 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 | C13H8Cl2N4S |
| Molecular Weight | 323.20 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |