Cyproterone Acetate EP Impurity C CAS 17183-98-1
| CAS No. | 17183-98-1 |
| Molecular Formula | C24H30Cl2O4 |
| Molecular Weight | 453.40 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Cyproterone Acetate EP Impurity C 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.
CATO supplies Cyproterone Acetate EP Impurity C (CAS 17183-98-1), a pharmacopoeial impurity reference standard (molecular formula C24H30Cl2O4, MW 453.40 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a flavonoid core, a hydroxyl group, an ether linkage, chlorine substitution, Cyproterone Acetate EP Impurity C is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 453.40 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 Acetate EP Impurity C 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 | C24H30Cl2O4 |
| Molecular Weight | 453.40 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, 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.) | 1961 |
| Halogen Content | Cl-containing |
Related Cyproterone Standards
- 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 Impurity 11 (CAS CATO-C4X-160111)
- 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-(6-Bromo-1-oxoisoindolin-2-yl)-1-((2-(trimethylsilyl)ethoxy)methyl)piperidine-2,6-dione (CAS 2731006-70-3)
- 2,2,2-Trifluoro-N-(5,6,7,10-tetrahydro-1,2,3,9-tetramethoxy-10-oxobenzo[a]heptalen-7-yl)acetamide (CAS 102491-72-5)
- 3-(5-Bromo-1-oxoisoindolin-2-yl)-1-((2-(trimethylsilyl)ethoxy)methyl)piperidine-2,6-dione (CAS 2409004-53-9)
- 1217782-80-3 2,2,2-Trifluoro-N-methyl-N-[(7S)-5,6,7,9-tetrahydro-10-hydroxy-1,2,3-trimethoxy-9-oxobenzo[a]heptalen-7-yl]acetamide N-Trifluoroacetyl-N-methyl-deacetylcolchiceine (CAS 1217782-80-3)
- Osimertinib Impurity 107 (CAS CATO-C4X-2045107)
- Benserazide Impurity 9 (CAS CATO-C4X-14279)
- Azilsartan impurity 150 (CAS CATO-C4X-1096150)
- 4-(Quinolin-6-yl)butan-2-ol (CAS 1498142-58-7)
- 10-Bromo-5,6-dihydrobenzo[f]imidazo[1,2-d][1,4]oxazepine-2-carboxamide (CAS 1401304-15-1)
- 1-((2-Chloro-4-nitrophenyl)amino)anthracene-9,10-dione (CAS 62322-93-4)
- 5,7-Dibromo-2,3-dihydrothieno[3,4-β][1,4]dioxine (CAS 174508-31-7)
- 3-(1-Cyanocyclopropyl)benzoic acid (CAS 884001-11-0)
- 2-(4-(Aminomethyl)-3-chloro-6-(difluoromethyl)pyridin-2-yl)acetic acid (CAS 1805076-94-1)
- Semaglutide Impurity 3 (CAS CATO-C4X-22263)
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