Cyproterone Impurity 6 CAS 2668-75-9
| CAS No. | 2668-75-9 |
| Molecular Formula | C23H28O4 |
| Molecular Weight | 368.47 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Cyproterone Impurity 6 (CAS 2668-75-9), a pharmacopoeial impurity reference standard (molecular formula C23H28O4, MW 368.47 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C23H28O4, Cyproterone Impurity 6 contains a flavonoid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 368.47 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
CATO manufactures Cyproterone Impurity 6 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C23H28O4 |
| Molecular Weight | 368.47 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Cyproterone Standards
- Cyproterone Acetate EP Impurity H (CAS 2668-74-8)
- Cyproterone Impurity 19 (CAS CATO-C4X-16019)
- Cyproterone (CAS 2098-66-0)
- 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?
- 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