Cyproterone Impurity 5 CAS 30337-71-4
| CAS No. | 30337-71-4 |
| Molecular Formula | C25H32O4 |
| Molecular Weight | 396.52 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 5 (CAS 30337-71-4, C25H32O4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C25H32O4, Cyproterone Impurity 5 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 396.52 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO manufactures Cyproterone Impurity 5 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 | C25H32O4 |
| Molecular Weight | 396.52 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.) | 1965 |
Related Cyproterone Standards
- 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)
- Cyproterone Acetate EP Impurity I (CAS 13698-49-2)
- Cyproterone Acetate EP Impurity A (CAS 2701-50-0)
- Cyproterone Acetate EP Impurity B (CAS CATO-C4X-16013)
- Cyproterone Acetate (CAS 427-51-0)
- Cyproterone Impurity 19 (CAS CATO-C4X-16019)
Recommended Standards
- Medroxyprogesterone impurity 8 (CAS 136803-81-1)
- Megestrol Acetate EP Impurity I (CAS CATO-C4X-14149)
- Butylphthalide Impurity 74 (CAS CATO-C4X-181374)
- Blonanserin Impurity 7 (CAS CATO-C4X-11107)
- Cefepime EP Impurity A (CAS 149261-27-8)
- N-Nitroso Vilazodone Ethyl Ester Impurity 12 (CAS CATO-C4X-135512)
- Empagliflozin impurity 211 (CAS CATO-C4X-1065211)
- methyl 3-(bromomethyl)-2-methoxybenzoate (CAS 87165-53-5)
- 6-(4-Formylphenoxy)hexanenitrile (CAS 1443327-29-4)
- 2,3-Dimethyl-3-buten-2-ol (CAS 10473-13-9)
- Pyrrolidin-3-amine hydrochloride (CAS 122458-34-8)
- (2S,6S)-2-methyl-6-m-tolylmorpholine (CAS 1350769-67-3)
- Ethyl 3-bromoimidazo[1,5-a]pyridine-6-carboxylate (CAS 2091929-07-4)
- (Des-His1,Glu?)-Glucagon (1-29) amide (human, rat, porcine) (CAS 110084-95-2)
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