Cyproterone Impurity 11 CAS CATO-C4X-160111
| CAS No. | CATO-C4X-160111 |
| Molecular Formula | C26H33ClO6 |
| Molecular Weight | 476.99 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
As a process- or degradation-related impurity, Cyproterone Impurity 11 (CAS CATO-C4X-160111, C26H33ClO6) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Cyproterone Impurity 11 (C26H33ClO6) contains a steroid core, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
CATO manufactures Cyproterone Impurity 11 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 | C26H33ClO6 |
| Molecular Weight | 476.99 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | ≥95% |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
Related Cyproterone Standards
- Cyproterone Acetate EP Impurity C (CAS 17183-98-1)
- Cyproterone Acetate EP Impurity G (CAS 23814-84-8)
- Cyproterone Acetate EP Impurity D (CAS CATO-C4X-16012)
- Cyproterone Acetate Impurity 2 (CAS 65423-26-9)
- Cyproterone Acetate-D3 (CAS 427-51-0 (non-labelled))
- Cyproterone Acetate (CAS 427-51-0)
- Cyproterone Acetate EP Impurity B (CAS CATO-C4X-16013)
- Cyproterone Acetate EP Impurity I (CAS 13698-49-2)
Recommended Standards
- 3,5-Dibromo-2,6-difluoro-N-(4-nitro-2-(trifluoromethyl)phenyl)pyridin-4-amine (CAS 37729-25-2)
- N'-(4-(Benzyloxy)benzylidene)-2-(4-(2-chlorobenzyl)piperazin-1-yl)acetohydrazide (CAS 315186-20-0)
- Methyl 5-((3-chlorophenyl)carbamoyl)-2-((5,6-dimethyl-2H-pyran-2-yl)(ethoxy)amino)-4-methylthiophene-3-carboxylate (CAS 505096-40-2)
- Avanafil Impurity 151 (CAS CATO-C4X-1118151)
- Cefixime Impurity 72 (CAS CATO-C4X-113972)
- Dexpanthenol Impurity N7 (CAS 124402-18-2)
- Itopride Impurity 20 (CAS 131028-54-1)
- 4-(2-Chloro-6-nitrophenyl)butan-2-amine (CAS 1342282-76-1)
- Urapidil Impurity 47 (CAS CATO-C4X-192447)
- (1-(Trifluoromethyl)-1H-pyrazol-3-yl)methanol (CAS 2090733-50-7)
- 2-(Dimethylaminomethyl)-alpha,alpha-diphenyl-1-ferrocenemethanol (CAS 1273-42-3)
- 1-(2-(Furan-2-yl)thiazolidin-2-yl)ethanone (CAS 824969-44-0)
- (4S)-9-(Acetyloxy)-10-[(acetyloxy)methyl]-4-ethyl-4-hydroxy-1H-pyrano[3,4:6,7]indolizino[1,2-β]quinoline-3,14(4H,12H)-dione (CAS 1304788-26-8)
- Nonapeptide-1 (CAS 158563-45-2)
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