3-((Dimethyl(3-(oxiran-2-ylmethoxy)propyl)silyl)oxy)-1,1,5,5-tetramethyl-1,5-bis(3-(oxiran-2-ylmethoxy)propyl)-3-phenyltrisiloxane CAS 90393-83-2
| CAS No. | 90393-83-2 |
| Molecular Formula | C28H50O8Si3 |
| Molecular Weight | 598.95 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 3-((Dimethyl(3-(oxiran-2-ylmethoxy)propyl)silyl)oxy)-1,1,5,5-tetramethyl-1,5-bis(3-(oxiran-2-ylmethoxy)propyl)-3-phenyltrisiloxane (CAS 90393-83-2), a certified reference material (molecular formula C28H50O8Si3, MW 598.95 g/mol) for analytical method development and quality control.
Structurally, 3-((Dimethyl(3-(oxiran-2-ylmethoxy)propyl)silyl)oxy)-1,1,5,5-tetramethyl-1,5-bis(3-(oxiran-2-ylmethoxy)propyl)-3-phenyltrisiloxane (C28H50O8Si3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. 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 598.95 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).
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.
Physical & Chemical Properties
| Molecular Formula | C28H50O8Si3 |
| Molecular Weight | 598.95 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.) | 1982 |
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