Difluprednate Impurity 6 CAS 167997-12-8
| CAS No. | 167997-12-8 |
| Molecular Formula | C20H24F2O4 |
| Molecular Weight | 366.40 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Difluprednate Impurity 6 (CAS 167997-12-8) is a certified pharmaceutical impurity reference standard with the molecular formula C20H24F2O4 and a molecular weight of 366.40 g/mol.
Owing to a flavonoid core, a hydroxyl group, an ether linkage, fluorine substitution, Difluprednate Impurity 6 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 366.40 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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.
CATO manufactures Difluprednate Impurity 6 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 | C20H24F2O4 |
| Molecular Weight | 366.40 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2004 |
| Halogen Content | F-containing |
Related Difluprednate Standards
- Difluprednate Impurity 2 (CAS 2285-44-1)
- Difluprednate Impurity 5 (CAS 1270039-29-6)
- Difluprednate Impurity 3 (CAS 1234557-20-0)
- 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
- N-phenyl-4-(5-(trifluoromethyl)pyridin-2-yl)piperazine-1-carbothioamide (CAS 951930-15-7)
- 4,4'-DDT (ring-13C12) (CAS 104215-84-1)
- N-(Furan-2-ylmethyl)-2-((3-phenyl-3H-[1,2,3]triazolo[4,5-d]pyrimidin-7-yl)thio)acetamide (CAS 896678-57-2)
- 4-Oxo-4-(4-(2,3,4-trimethoxybenzyl)piperazin-1-yl)butanoic acid (CAS 1010915-59-9)
- Apixaban Impurity 145 (CAS CATO-C4X-1088145)
- Cis-Gadoteridol Impurity 7 (CAS 214196-05-1)
- Nintedanib Impurity 58 (CAS 1160293-24-2)
- N-(2-Ethoxyphenyl)-4,4-dimethyl-4,5-dihydro-1,3-thiazol-2-amine (CAS 519150-60-8)
- Dichloro[(±)−BINAP]digold(I) (CAS 685138-48-1)
- 2-(4-Bromophenoxy)-1-(2,6-dimethylpiperidin-1-yl)ethan-1-one (CAS 325731-51-9)
- 2-Ethyl-1H-imidazole-5-carbaldehyde (CAS 83902-00-5)
- 7-Amino-1h-indazol-6-ol (CAS 39761-89-2)
- 2-((4-Methoxybenzyl)sulfonyl)-4,5-diphenyl-1-propyl-1H-imidazole (CAS 339277-82-6)
- Macrocyclic Peptide flaviviridae Viruses InhibitorDISCONTINUED (CAS 1510840-70-6)
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