Diphenyldiacetoxysilane (Diacetoxydiphenylsilane) CAS 66817-59-2
| CAS No. | 66817-59-2 |
| Molecular Formula | C20H34O5Si6 |
| Molecular Weight | 522.99 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 522.99 g/mol gives Diphenyldiacetoxysilane (Diacetoxydiphenylsilane) distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Diphenyldiacetoxysilane (Diacetoxydiphenylsilane) (CAS 66817-59-2), molecular formula C20H34O5Si6 and molecular weight 522.99 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Diphenyldiacetoxysilane (Diacetoxydiphenylsilane) (C20H34O5Si6) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 522.99 g/mol, it falls into the moderately-high-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), Diphenyldiacetoxysilane (Diacetoxydiphenylsilane) 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 | C20H34O5Si6 |
| Molecular Weight | 522.99 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
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