(R,Z)-Methyl 7-(5-oxo-3-((triethylsilyl)-oxy)cyclopent-1-en-1-yl)hept-5-enoate CAS 220328-59-6
| CAS No. | 220328-59-6 |
| Molecular Formula | C19H32O4Si |
| Molecular Weight | 352.54 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
(R,Z)-Methyl 7-(5-oxo-3-((triethylsilyl)-oxy)cyclopent-1-en-1-yl)hept-5-enoate (CAS 220328-59-6), molecular formula C19H32O4Si and molecular weight 352.54 g/mol, is a CATO reference standard with documented purity and traceability.
(R,Z)-Methyl 7-(5-oxo-3-((triethylsilyl)-oxy)cyclopent-1-en-1-yl)hept-5-enoate (C19H32O4Si) contains a steroid core, a hydroxyl group, an ether linkage. 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C19H32O4Si |
| Molecular Weight | 352.54 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 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.) | 2019 |
Recommended Standards
- (1R,2R)-2-(((tert-Butyldiphenylsilyl)oxy)methyl)cyclobutane-1-carbaldehyde (CAS 2130069-72-4)
- (S)-1-(Oxetan-2-ylmethyl)-5-(((triisopropylsilyl)oxy)methyl)-1H-imidazole-2-carbaldehyde (CAS 2761287-64-1)
- (Z)-Methyl 7-(3-((tert-butyldimethylsilyl)oxy)-5-oxocyclopent-1-en-1-yl)hept-5-enoate (CAS 132619-70-6)
- 1-(((tert-Butyldiphenylsilyl)oxy)methyl)cyclobutane-1-carbaldehyde (CAS 956520-84-6)
- 5-Oxo-5-(3-oxopiperazin-1-yl)pentanoic acid (CAS 926237-98-1)
- 4-Chloro-2-cyclopropylpyrazolo[1,5-a]pyrazine (CAS 1602060-23-0)
- N-(3-Methoxypropyl)-N-(2-nitrophenyl)methanesulfonamide (CAS 1845698-50-1)
- 2-Chloro-N-(5-methyl-1,3,4-oxadiazol-2-yl)acetamide (CAS 1049873-58-6)
- 5-Chloro-4-(p-tolyl)furan-2-carboxylic acid (CAS 1427020-16-3)
- (3-Bromophenyl)(4-chloro-3-fluorophenyl)methanol (CAS 1443342-95-7)
- 4,4-Diethoxybutylamine (CAS 6346-09-4)
- Palmitoylcoenzymeapotassiumsalt (CAS 1763-10-6)
- 1-(Phthalazin-5-yl)ethanol (CAS 1782556-49-3)
- Semaglutide Impurity 191 (CAS CATO-C4X-2226191)
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