Dydrogesterone Impurity 25 CAS CATO-C4X-218325
| CAS No. | CATO-C4X-218325 |
| Molecular Formula | C21H26O3 |
| Molecular Weight | 326.43 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Dydrogesterone Impurity 25 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
As a process- or degradation-related impurity, Dydrogesterone Impurity 25 (CAS CATO-C4X-218325, C21H26O3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Dydrogesterone Impurity 25 (C21H26O3) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 326.43 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | C21H26O3 |
| Molecular Weight | 326.43 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Dydrogesterone Standards
- Dydrogesterone Impurity 14 (CAS 7488-73-5)
- Dydrogesterone-d6 (CAS CATO-C4X-21833)
- Dydrogesterone Impurity 1 (CAS 1819-14-3)
- Dydrogesterone Impurity 4 (CAS 4243-74-7)
- Dydrogesterone Impurity N3 (CAS 25093-47-4)
- Dydrogesterone Impurity 12; (CAS 17398-60-6)
- Dydrogesterone (CAS 152-62-5)
- Dydrogesterone EP Impurity C (CAS 246038-13-1)
Recommended Standards
- Revefenacin impurity 77 (CAS CATO-C4X-203177)
- Gadoteridol Impurity 27 (CAS CATO-C4X-225727)
- Quinine Sulfate EP Impurity C (CAS 522-66-7)
- Gadoteridol impurity 38 (CAS CATO-C4X-225738)
- Peramivir Impurity 69 (CAS CATO-C4X-183369)
- Difelikefalin Impurity 64 (CAS 2269512-88-9)
- Iguratimod Impurity 16 (CAS CATO-C4X-182616)
- (7R,7AR)-7-isopropyltetrahydro-1H-pyrrolizin-3(2H)-one (CAS 92721-37-4)
- 2-((2-Methylbenzyl)oxy)benzaldehyde (CAS 447409-55-4)
- 3-(2-Naphthyl)azetidine (CAS 1260898-68-7)
- N-Methyl-4-(morpholin-4-yl)piperidine-1-carboxamide (CAS 1824019-40-0)
- 2-Bromo-4-(bromomethyl)-3-(difluoromethyl)-6-fluoropyridine (CAS 1806909-33-0)
- 3-Hydroxy-2,3-dimethylbutan-2-yl hydrogen (2,5-dimethoxy-2,5-dihydrofuran-3-yl)boronate (CAS 2223003-40-3)
- Polymyxin B nonapeptide TFA (CAS 2220175-42-6)
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