Cyproterone Acetate EP Impurity G CAS 23814-84-8
| CAS No. | 23814-84-8 |
| Molecular Formula | C24H31ClO5 |
| Molecular Weight | 434.95 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Cyproterone Acetate EP Impurity G is closely related to a flavonoid core, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
As a process- or degradation-related impurity, Cyproterone Acetate EP Impurity G (CAS 23814-84-8, C24H31ClO5) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a flavonoid core, a hydroxyl group, an ether linkage, chlorine substitution, Cyproterone Acetate EP Impurity G is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 434.95 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
CATO manufactures Cyproterone Acetate EP Impurity G 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 | C24H31ClO5 |
| Molecular Weight | 434.95 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Halogen Content | Cl-containing |
Related Cyproterone Standards
- 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 C (CAS 17183-98-1)
- Cyproterone Acetate EP Impurity B (CAS CATO-C4X-16013)
- Cyproterone Acetate EP Impurity I (CAS 13698-49-2)
- Cyproterone Acetate EP Impurity J (CAS 15423-97-9)
Recommended Standards
- Toremifene Impurity 3 (CAS 1798421-30-3)
- (E)-2,2-Dimethyl-propanoic Acid 4-[4-Chloro-1-(4-hydroxyphenyl)-2-phenyl-1-butenyl]phenyl Ester (CAS 177748-18-4)
- Halcinonide Impurity 9 (CAS CATO-C4X-27959)
- Tianeptine EP Impurity D (CAS 131206-48-9)
- Loratadine Impurity 37 (CAS CATO-C4X-142637)
- Clindamycin Impurity 73 (CAS 1123211-66-4 (free base))
- Arbidol Impurity 9 (CAS CATO-C4X-11299)
- n-Isopropyl-3-(methylthio)aniline (CAS 1019611-29-0)
- (R)-2,2-dibromo-1-(4-chlorophenyl)ethan-1-ol (CAS CATO-C3D-262968)
- 2-(Piperidin-3-yloxy)pyridine hydrochloride (CAS 1185310-55-7)
- 2-Methoxy-N-(2-(piperidin-3-yl)ethyl)acetamide hydrochloride (CAS 1361116-55-3)
- (6-((tert-Butyldimethylsilyl)oxy)benzofuran-2-yl)boronic acid (CAS 1800231-42-8)
- (1-((5-Bromofuran-2-yl)methyl)piperidin-4-yl)methanol (CAS 1249062-32-5)
- Pancreatic Polypeptide (31-36) Free Acid, human (CAS 192432-73-8)
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