Desogestrel EP Impurity C/Desogestrel USP RC D CAS 54024-21-4
| CAS No. | 54024-21-4 |
| Molecular Formula | C20H28O |
| Molecular Weight | 284.44 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Desogestrel EP Impurity C/Desogestrel USP RC D (C20H28O) is characterized by a steroid core, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Desogestrel EP Impurity C/Desogestrel USP RC D (CAS 54024-21-4) is a certified pharmaceutical impurity reference standard with the molecular formula C20H28O and a molecular weight of 284.44 g/mol.
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.
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 | C20H28O |
| Molecular Weight | 284.44 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1972 |
Related Desogestrel Standards
Recommended Standards
- Venetoclax Impurity 68 (CAS 2227206-05-3)
- 11-cis Retinal (CAS 564-87-4)
- 17-Methylene-4-androsten-3-one 17-Methylene-androst-4-en-3-one, 846-45-7 (CAS 846-45-7)
- Lynestrenol (CAS 52-76-6)
- Abemaciclib Impurity 28 (CAS CATO-C4X-293728)
- Colesevelam Decyl Aminoquat Impurity HBr (6-Decylaminohexyl Trimethylammonium Bromide HBr) (CAS 2247938-20-9)
- N-Nitroso Ondansetron impurity 30 (CAS CATO-C4X-139430)
- Axitinib impurity 47 (CAS 1639137-80-6)
- 2-[Bis[2-(tert-butoxy)-2-oxoethyl]amino]acetic Acid (CAS 171557-31-6)
- 4-(Chloromethyl)-7-ethyl-2H-1-benzopyran-2-one (CAS 554423-21-1)
- 2-[(morpholin-4-yl)methyl]quinazolin-4-amine (CAS 877977-25-8)
- 3-({6-methylimidazo[1,2-a]pyridin-2-yl}methoxy)benzoic acid (CAS 929971-61-9)
- N-(3,4-Dichlorophenyl)-2-[4-(4-fluorophenyl)piperazin-1-yl]acetamide (CAS 303091-44-3)
- Fibrinogen-Binding Peptide (CAS 137235-80-4)
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