1,1,5,5-Tetramethyl-3,3-diphenyltrisiloxane CAS 17875-55-7
| CAS No. | 17875-55-7 |
| Molecular Formula | C16H22O2Si3 |
| Molecular Weight | 330.60 g/mol |
| 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 1,1,5,5-Tetramethyl-3,3-diphenyltrisiloxane.
1,1,5,5-Tetramethyl-3,3-diphenyltrisiloxane (CAS 17875-55-7) is a high-purity analytical reference standard with the molecular formula C16H22O2Si3 and a molecular weight of 330.60 g/mol.
1,1,5,5-Tetramethyl-3,3-diphenyltrisiloxane (C16H22O2Si3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
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 | C16H22O2Si3 |
| Molecular Weight | 330.60 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
Related Tetramethyl Standards
- 3,3',5,5'-Tetramethyl-4,4'-di(2-hydroxethanyloxy)-bibenzene (CAS 120703-31-3)
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Recommended Standards
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