Dienestrol CAS 84-17-3
| CAS No. | 84-17-3 |
| Molecular Formula | C18H18O2 |
| Molecular Weight | 266.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 266.33 g/mol gives Dienestrol distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Dienestrol (CAS 84-17-3), molecular formula C18H18O2 and molecular weight 266.33 g/mol, is a CATO reference standard with documented purity and traceability.
Dienestrol (C18H18O2) 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 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 | C18H18O2 |
| Molecular Weight | 266.33 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Dienestrol Standards
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- Proguanil EP Impurity D (CAS 45095-69-0)
- 4-(2-Methylquinolin-3-yl)pyrimidin-2-amine (CAS 1522045-73-3)
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- Semaglutide impurity 66 (CAS CATO-C4X-222666)
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