4-Hydroxy-3,5-diiodobenzenesulfonic acid CAS 554-71-2
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 554-71-2 |
| Molecular Formula | C6H4I2O4S |
| Molecular Weight | 425.97 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Hydroxy-3,5-diiodobenzenesulfonic acid (CAS 554-71-2) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C6H4I2O4S. Molecular weight: 425.97 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C6H4I2O4S |
| Molecular Weight | 425.97 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | I-containing |
| Sulfur Atoms | 1 |
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- Dapagliflozin Impurity 181 (CAS CATO-C4X-1138181)
- 4-Bromo-3-isopropyl-1,1'-biphenyl (CAS 1443327-12-5)
- Semaglutide Impurity 18 (CAS 1671100-14-3)
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