4-Hydroxyisothiazole-3-carboxylic acid CAS 178316-76-2
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 178316-76-2 |
| Molecular Formula | C4H3NO3S |
| Molecular Weight | 145.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
High-purity 4-Hydroxyisothiazole-3-carboxylic acid (CAS 178316-76-2) pharmaceutical standards reference standard. Molecular formula: C4H3NO3S. Molecular weight: 145.14 g/mol. Produced by CATO, one of China's leading reference material manufacturers, with COA documentation and global shipping.
Physical & Chemical Properties
| Molecular Formula | C4H3NO3S |
| Molecular Weight | 145.14 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2007 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Hydroxyisothiazole Standards
Recommended Standards
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- 2-(Diethylphosphoryl)acetonitrile (CAS 13298-29-8)
- 4-[N-methyl-2-(2-methyl-1H-indol-3-yl)acetamido]butanoic acid (CAS 1099068-61-7)
- 4'-(Dimethylamino)[1,1'-biphenyl]-3-carbaldehyde (CAS 893734-60-6)
- (R)-1-(5-fluoro-2-methylbenzyl)piperidin-3-amine (CAS 1222711-20-7)
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- 2-Bromo-1,3-dimethyl-5-propoxybenzene (CAS 91345-76-5)
- N-(Butan-2-yl)formamide (CAS 53798-89-3)
- (D-Trp32)-Neuropeptide Y (porcine) trifluoroacetate salt (CAS 153549-78-1)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 13829788188 / jacky.chen@cato-chem.com