Diethylstilbestrol CAS 6898-97-1
| CAS No. | 6898-97-1 |
| Molecular Formula | C18H20O2 |
| Molecular Weight | 268.35 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Diethylstilbestrol is closely related to a steroid core, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Diethylstilbestrol (CAS 6898-97-1), molecular formula C18H20O2 and molecular weight 268.35 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Diethylstilbestrol (C18H20O2) is characterized by a steroid core, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
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 | C18H20O2 |
| Molecular Weight | 268.35 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
Related Diethylstilbestrol Standards
Recommended Standards
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- Flupentixol Impurity 36 (CAS CATO-C4X-189536)
- 6-Methoxy-1-methyl-3,4-dihydroquinolin-2(1H)-one (CAS 187679-62-5)
- 2-[4-(methoxycarbonyl)-1h-1,2,3-triazol-1-yl]acetic acid (CAS 467235-14-9)
- Semaglutide Impurity 147 (CAS CATO-C4X-2226147)
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