5-iodo-3-methylisothiazole-4-carboxamide CAS 1423700-20-2
| CAS No. | 1423700-20-2 |
| Molecular Formula | C5H5IN2OS |
| Molecular Weight | 268.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
5-iodo-3-methylisothiazole-4-carboxamide (CAS 1423700-20-2) is a high-purity analytical reference standard with the molecular formula C5H5IN2OS and a molecular weight of 268.08 g/mol.
Owing to an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, iodine substitution, 5-iodo-3-methylisothiazole-4-carboxamide is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 268.08 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C5H5IN2OS |
| Molecular Weight | 268.08 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.) | 1991 |
| Halogen Content | I-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
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