4-Hydroxy-3,5-diiodobenzenesufonic Acid Sodium Salt Hydrate, >95% CAS 515-44-6
| CAS No. | 515-44-6 |
| Molecular Formula | C6H3I2O4S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-Hydroxy-3,5-diiodobenzenesufonic Acid Sodium Salt Hydrate, >95%.
4-Hydroxy-3,5-diiodobenzenesufonic Acid Sodium Salt Hydrate, >95% (CAS 515-44-6) is a high-purity analytical reference standard with the molecular formula C6H3I2O4SNaH2O and a molecular weight of 465.95 g/mol.
Owing to a salt form, a carbohydrate-derived structure, a sulfone group, iodine substitution, 4-Hydroxy-3,5-diiodobenzenesufonic Acid Sodium Salt Hydrate, >95% is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 465.95 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C6H3I2O4S Na H2O |
| Molecular Weight | 465.95 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) | 3.5 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | I-containing |
| Sulfur Atoms | 1 |
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