5-Ethoxy-7-fluoro-[1,2,4]triazolo[4,3-c]pyrimidine-3(2H)-thione CAS 166524-68-1
| CAS No. | 166524-68-1 |
| Molecular Formula | C7H7FN4OS |
| Molecular Weight | 214.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C7H7FN4OS, 5-Ethoxy-7-fluoro-[1,2,4]triazolo[4,3-c]pyrimidine-3(2H)-thione contains an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 214.22 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
5-Ethoxy-7-fluoro-[1,2,4]triazolo[4,3-c]pyrimidine-3(2H)-thione (CAS 166524-68-1) is a high-purity analytical reference standard with the molecular formula C7H7FN4OS and a molecular weight of 214.22 g/mol.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 5-Ethoxy-7-fluoro-[1,2,4]triazolo[4,3-c]pyrimidine-3(2H)-thione 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.
Physical & Chemical Properties
| Molecular Formula | C7H7FN4OS |
| Molecular Weight | 214.22 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2004 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
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