Roflumilast Impurity 33 CAS 2376345-94-5
Purity ＞95%In StockPharmacopoeial Impurity Standards
| CAS No. | 2376345-94-5 |
| Molecular Formula | C12H12F2O4 |
| Molecular Weight | 258.22 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Roflumilast Impurity 33 (CAS 2376345-94-5) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C12H12F2O4. Molecular weight: 258.22 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C12H12F2O4 |
| Molecular Weight | 258.22 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | ＞95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1999 |
| Halogen Content | F-containing |
Related Roflumilast Standards
- Roflumilast impurity 15 (CAS 162401-69-6)
- Roflumilast Impurity 34 (CAS 1882067-44-8)
- Roflumilast USP Related Compound D (CAS 162401-62-9)
- Roflumilast Impurity 44 (CAS CATO-C4X-108444)
- Roflumilast Impurity C65 (CAS 162401-60-7)
- Roflumilast Impurity 58 (CAS CATO-C4X-193558)
- Roflumilast Impurity 43 (CAS CATO-C4X-108443)
- Roflumilast impurity 23 (CAS 1369817-76-4)
Recommended Standards
- N1-(2,4-Difluorophenyl)-N2-(3-hydroxypropyl)oxalamide (CAS 886900-28-3)
- Methyl 3-4-di-O-acetyl-D-glucuronal (CAS 57690-62-7)
- Nemonoxacin Impurity 76 (CAS 221221-12-1)
- Topiramate Didesacetal Impurity (CAS 106881-42-9)
- Tacrolimus Impurity 17 (CAS CATO-C4X-130017)
- 2-Methoxyethyl 7-methyl-3-oxo-2-(3-phenylallylidene)-5-(thiophen-2-yl)-3,5-dihydro-2H-thiazolo[3,2-a]pyrimidine-6-carboxylate (CAS 617698-67-6)
- (2E)-3-[4-(2-Chlorophenoxy)-3-nitrophenyl]prop-2-enoic acid (CAS 338403-65-9)
- 4,4'-(1,3-Phenylenebis(diazene-2,1-diyl))bis(benzene-1,3-diamine) (CAS 1052-38-6)
- 1,5-Dimethyl-1H-pyrrole-2-carboximidhydrazide (CAS 791761-91-6)
- Semaglutide impurity 259 (CAS CATO-C4X-2226259)
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 13829788188 / jacky.chen@cato-chem.com