5-Chloro-1,3,4-thiadiazole-2-carboxamide CAS 64837-52-1
| CAS No. | 64837-52-1 |
| Molecular Formula | C3H2ClN3OS |
| Molecular Weight | 163.59 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
5-Chloro-1,3,4-thiadiazole-2-carboxamide (CAS 64837-52-1), molecular formula C3H2ClN3OS and molecular weight 163.59 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C3H2ClN3OS, 5-Chloro-1,3,4-thiadiazole-2-carboxamide contains an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 163.59 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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.
Physical & Chemical Properties
| Molecular Formula | C3H2ClN3OS |
| Molecular Weight | 163.59 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1975 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 5-Chloro-1,2,3-thiadiazole-4-carboxamide (CAS 64837-51-0)
- 2-Chloro-5-nitrothiophene (CAS 13195-49-8)
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