Difluprednate Impurity 5 CAS 1270039-29-6
| CAS No. | 1270039-29-6 |
| Molecular Formula | C21H24F2O4 |
| Molecular Weight | 378.41 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C21H24F2O4, Difluprednate Impurity 5 contains a flavonoid core, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 378.41 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
As a process- or degradation-related impurity, Difluprednate Impurity 5 (CAS 1270039-29-6, C21H24F2O4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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.
CATO manufactures Difluprednate 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 | C21H24F2O4 |
| Molecular Weight | 378.41 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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; 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.) | 1990 |
| Halogen Content | F-containing |
Related Difluprednate Standards
- Difluprednate Impurity 2 (CAS 2285-44-1)
- Difluprednate Impurity 3 (CAS 1234557-20-0)
- Difluprednate Impurity 6 (CAS 167997-12-8)
- Difluprednate Impurity N2 (CAS 2326-26-3)
- Difluprednate Impurity N1 (CAS 23640-96-2)
- Difluprednate Impurity 1 (CAS CATO-C4X-21781)
- Difluprednate Impurity 4 (CAS 1296262-60-6)
- Difluprednate (CAS 23674-86-4)
Recommended Standards
- Methyl 2-(5-benzyl-4,6-dioxo-3-phenyloctahydropyrrolo[3,4-c]pyrrol-1-yl)acetate (CAS 1008006-46-9)
- 4-((Triphenyl-lambda5-phosphanylidene)amino)benzonitrile (CAS 74395-06-5)
- tert-Butyl 3-oxo-2-(2-oxo-2-(2-phenoxyethoxy)ethyl)piperazine-1-carboxylate (CAS 1009751-17-0)
- 3,6,9,12,15,18,21-Heptaoxatetracos-1-yn-24-oic acid (CAS 1818294-28-8)
- Metoclopramide Impurity 24 (CAS 55304-05-7)
- Lusutrombopag Impurity 58 (CAS CATO-C4X-208458)
- Isoprenaline impurity 21 (CAS CATO-C4X-277521)
- tert-Butyl 4-(chloromethyl)imidazole-1-carboxylate (CAS 500782-71-8)
- tert-Butyl 3-bromo-6-fluoropyridine-2-carboxylate (CAS 1430753-76-6)
- 1-Bromo-4-(3,3-difluorocyclobutyl)benzene, 97% (CAS 1236357-60-0)
- 4,8-Dimethyl-1-phenylnonane (CAS 205529-85-7)
- 5-Hydroxy-2-methyl-6-(piperidin-1-ylmethyl)pyrimidin-4(1H)-one (CAS 13922-44-6)
- Methyl 2-(piperazin-1-yl)benzoate hydrochloride (CAS 1394820-10-0)
- Semaglutide impurity 55 (CAS CATO-C4X-222655)
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