5-Amino-3-methyl-isothiazole-4-sulfonic acid CAS 4590-59-4
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 4590-59-4 |
| Molecular Formula | C4H6N2O3S2 |
| Molecular Weight | 194.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Amino-3-methyl-isothiazole-4-sulfonic acid (CAS 4590-59-4) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C4H6N2O3S2. Molecular weight: 194.23 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C4H6N2O3S2 |
| Molecular Weight | 194.23 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
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Recommended Standards
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- N-(3-chlorobenzyl)-2-(chloromethyl)quinazolin-4(3H)-imine (CAS 1255147-03-5)
- 1-(4-Cyano-phenyl)-2-(1,3-dioxolan-2-yl)-ethanone (CAS 1166996-43-5)
- Des-Ala28-Tirzepatide (CAS CATO-CPTD788945)
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