5-Mercapto-[1,2,4]triazolo[4,3-a]pyrimidine-7-sulfonic acid CAS 189503-76-2
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 189503-76-2 |
| Molecular Formula | C5H4N4O3S2 |
| Molecular Weight | 232.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Mercapto-[1,2,4]triazolo[4,3-a]pyrimidine-7-sulfonic acid (CAS 189503-76-2) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C5H4N4O3S2. Molecular weight: 232.24 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C5H4N4O3S2 |
| Molecular Weight | 232.24 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2011 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 2 |
Related Mercapto Standards
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- 3-Mercapto-N-nonylpropionamide (CAS 228716-16-3)
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Recommended Standards
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