(5R)-2,2,8,8,9,9-Hexamethyl-3,3-diphenyl-5-[3-(trimethylsilyl)-2-propyn-1-yl]-4,7-ddioxa-3,8-disiladecane CAS 1251537-17-3
| CAS No. | 1251537-17-3 |
| Molecular Formula | C30H48O2Si3 |
| Molecular Weight | 524.96 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 (5R)-2,2,8,8,9,9-Hexamethyl-3,3-diphenyl-5-[3-(trimethylsilyl)-2-propyn-1-yl]-4,7-ddioxa-3,8-disiladecane.
(5R)-2,2,8,8,9,9-Hexamethyl-3,3-diphenyl-5-[3-(trimethylsilyl)-2-propyn-1-yl]-4,7-ddioxa-3,8-disiladecane (CAS 1251537-17-3) is a high-purity analytical reference standard with the molecular formula C30H48O2Si3 and a molecular weight of 524.96 g/mol.
Structurally, (5R)-2,2,8,8,9,9-Hexamethyl-3,3-diphenyl-5-[3-(trimethylsilyl)-2-propyn-1-yl]-4,7-ddioxa-3,8-disiladecane (C30H48O2Si3) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 524.96 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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), (5R)-2,2,8,8,9,9-Hexamethyl-3,3-diphenyl-5-[3-(trimethylsilyl)-2-propyn-1-yl]-4,7-ddioxa-3,8-disiladecane 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 | C30H48O2Si3 |
| Molecular Weight | 524.96 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
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Recommended Standards
- Amlodipine Impurity 58 (CAS 140171-50-2)
- Losartan Impurity 25 (CAS CATO-C4X-168325)
- Amlodipine Aspartic Acid Impurity (CAS 400602-35-9)
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- 5-Phenyl-1H-indole-7-carboxamide (CAS 860625-06-5)
- Vonoprazan Impurity 136 (CAS CATO-C4X-1020136)
- 3-Ethyl-3-hydroxypentanenitrile (CAS 17190-27-1)
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