Sodium 4-ethoxybenzenesulfonate hydrate CAS 866761-58-2
| CAS No. | 866761-58-2 |
| Molecular Formula | C8H9O4S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 242.22 g/mol gives Sodium 4-ethoxybenzenesulfonate hydrate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Sodium 4-ethoxybenzenesulfonate hydrate (CAS 866761-58-2), molecular formula C8H9O4SNaH2O and molecular weight 242.22 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Sodium 4-ethoxybenzenesulfonate hydrate (C8H9O4SNaH2O) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 3.5, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 242.22 g/mol, it falls into the medium-molecular-weight range. 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.
As a certified reference material (CRM), Sodium 4-ethoxybenzenesulfonate hydrate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C8H9O4S Na H2O |
| Molecular Weight | 242.22 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.5 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1987 |
| Sulfur Atoms | 1 |
Recommended Standards
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- Atrial Natriuretic Polypeptide (4-28), human (CAS 95896-08-5)
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