Cyproterone CAS 2098-66-0
| CAS No. | 2098-66-0 |
| Molecular Formula | C22H27ClO3 |
| Molecular Weight | 374.90 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Cyproterone (C22H27ClO3) contains a steroid core, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 374.90 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.
CATO supplies Cyproterone (CAS 2098-66-0), a certified reference material (molecular formula C22H27ClO3, MW 374.90 g/mol) for analytical method development and quality control.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C22H27ClO3 |
| Molecular Weight | 374.90 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
Related Cyproterone Standards
- Cyproterone Impurity 19 (CAS CATO-C4X-16019)
- Cyproterone Acetate EP Impurity H (CAS 2668-74-8)
- Cyproterone Impurity 6 (CAS 2668-75-9)
- Cyproterone Acetate EP Impurity A (CAS 2701-50-0)
- Cyproterone Impurity 5 (CAS 30337-71-4)
- Cyproterone Impurity 8 (CAS CATO-C4X-16018)
- Cyproterone Acetate EP Impurity J (CAS 15423-97-9)
- Cyproterone Acetate EP Impurity E (CAS 17184-05-3)
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Why CATO?
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