4-((S)-1-((1S,3aS,7aS,E)-4-((Z)-2-((3S,5R)-3,5-bis((tert-butyldimethylsilyl)oxy)-2-methylenecyclohexylidene)ethylidene)-7a-methyloctahydro-1H-inden-1-yl)ethoxy)-2-methylbutan-2-ol CAS 152517-44-7
| CAS No. | 152517-44-7 |
| Molecular Formula | C38H70O4Si2 |
| Molecular Weight | 647.13 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 4-((S)-1-((1S,3aS,7aS,E)-4-((Z)-2-((3S,5R)-3,5-bis((tert-butyldimethylsilyl)oxy)-2-methylenecyclohexylidene)ethylidene)-7a-methyloctahydro-1H-inden-1-yl)ethoxy)-2-methylbutan-2-ol.
4-((S)-1-((1S,3aS,7aS,E)-4-((Z)-2-((3S,5R)-3,5-bis((tert-butyldimethylsilyl)oxy)-2-methylenecyclohexylidene)ethylidene)-7a-methyloctahydro-1H-inden-1-yl)ethoxy)-2-methylbutan-2-ol (CAS 152517-44-7), molecular formula C38H70O4Si2 and molecular weight 647.13 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C38H70O4Si2, 4-((S)-1-((1S,3aS,7aS,E)-4-((Z)-2-((3S,5R)-3,5-bis((tert-butyldimethylsilyl)oxy)-2-methylenecyclohexylidene)ethylidene)-7a-methyloctahydro-1H-inden-1-yl)ethoxy)-2-methylbutan-2-ol contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 647.13 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
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 | C38H70O4Si2 |
| Molecular Weight | 647.13 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| 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.) | 2000 |
Recommended Standards
- Palladium(2+), [methylenebis[diphenylphosphine]-P,P']bis[sulfinylbis[methane]-S]-, diiodide (CAS 113132-19-7)
- 3-Bromo-2-chloro-6-fluoroaniline, n-boc protected (CAS 1820673-55-9)
- Cholesteryl Linolenate (CAS 2545-22-4)
- Tris(4-bromo-2,3,5,6-tetramethylphenyl)borane (CAS 321735-68-6)
- 3-Amino-1-[2-(difluoromethoxy)phenyl]pyrrolidin-2-one (CAS 1270676-00-0)
- Rel-((2S,3aS,6aS)-hexahydro-2H-furo[2,3-c]pyrrol-2-yl)methanol hydrochloride (CAS 2095192-24-6)
- n-Benzyl-2-(methylsulfonyl)propanamide (CAS 1209668-81-4)
- 4-borononaphthalene-1-carboxylic acid (CAS 332398-57-9)
- Methyl 2-(2,4-dimethylphenyl)acetate (CAS 89722-18-9)
- 5-Nitronicotinonitrile (CAS 2013-71-0)
- 6-(Cyanomethyl)-3-(difluoromethyl)-5-iodopicolinonitrile (CAS 1805183-53-2)
- 5-Butyl-4-chloro-2,3-dihydrofuran (CAS 50596-95-7)
- 5-Iodo-1-isopropyl-1H-pyrazole-4-carbonitrile (CAS 1282516-28-2)
- Semaglutide impurity 28 (CAS CATO-C4X-222628)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com