| CAS No. | 37545-34-9 |
| Molecular Formula | C6H4N4S2 |
| Molecular Weight | 196.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 196.25 g/mol gives 5-Pyrazin-2-yl-1,3,4-thiadiazole-2-thiol distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 5-Pyrazin-2-yl-1,3,4-thiadiazole-2-thiol (CAS 37545-34-9), a certified reference material (molecular formula C6H4N4S2, MW 196.25 g/mol) for analytical method development and quality control.
The molecular framework of 5-Pyrazin-2-yl-1,3,4-thiadiazole-2-thiol (C6H4N4S2) is characterized by a nitrile group, sulfur-containing functionality, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, 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), 5-Pyrazin-2-yl-1,3,4-thiadiazole-2-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 | C6H4N4S2 |
| Molecular Weight | 196.25 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1967 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 2 |