| CAS No. | 14778-87-1 |
| Molecular Formula | C4H4N4S2 |
| Molecular Weight | 172.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
6-Methyl-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazole-3(2H)-thione (CAS 14778-87-1), molecular formula C4H4N4S2 and molecular weight 172.23 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 6-Methyl-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazole-3(2H)-thione (C4H4N4S2) is characterized by a nitrile group, sulfur-containing functionality. 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C4H4N4S2 |
| Molecular Weight | 172.23 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) | 5.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1961 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 2 |