Cyproterone Acetate EP Impurity B CAS CATO-C4X-16013
| CAS No. | CATO-C4X-16013 |
| Molecular Formula | C25H32O5 |
| Molecular Weight | 412.52 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 412.52 g/mol gives Cyproterone Acetate EP Impurity B distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
As a process- or degradation-related impurity, Cyproterone Acetate EP Impurity B (CAS CATO-C4X-16013, C25H32O5) 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, Cyproterone Acetate EP Impurity B is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 412.52 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.
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 | C25H32O5 |
| Molecular Weight | 412.52 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Cyproterone Standards
- Cyproterone Acetate (CAS 427-51-0)
- Cyproterone Acetate-D3 (CAS 427-51-0 (non-labelled))
- Cyproterone Acetate EP Impurity I (CAS 13698-49-2)
- Cyproterone Acetate EP Impurity J (CAS 15423-97-9)
- Cyproterone Acetate EP Impurity E (CAS 17184-05-3)
- Cyproterone Impurity 5 (CAS 30337-71-4)
- Cyproterone Impurity 8 (CAS CATO-C4X-16018)
- Cyproterone Acetate Impurity 2 (CAS 65423-26-9)
Recommended Standards
- Dapoxetine Impurity 91 (CAS CATO-C4X-143991)
- Adapalene Impurity 12 (CAS 1063712-23-1)
- Dapoxetine Impurity 81 (CAS 2415108-74-4)
- Adapalene Impurity 13 (CAS 106685-43-2)
- Teprenone Impurity 28 (CAS CATO-C4X-208128)
- Cefathiamidine Impurity 25 (CAS CATO-C4X-133725)
- Olmesartan Impurity 65 (CAS 2101308-74-9)
- Empagliflozin Impurity 290 (CAS CATO-C4X-1065290)
- 1-((4-Chloro-2-nitrophenyl)sulfonyl)-1H-pyrrole (CAS 51144-97-9)
- rel-(3R,4R)-4-Propylpyrrolidine-3-carboxylic acid (CAS 261896-37-1)
- N'-tert-butyl(tert-butoxy)carbohydrazide (CAS 60295-52-5)
- N-(2-((2-Hydroxyethyl)amino)ethyl)oleamide (CAS 5839-65-6)
- 5-(chloromethyl)-1-methyl-imidazole (CAS 89180-90-5)
- Semaglutide impurity 91 (CAS CATO-C4X-222691)
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