Efavirenz Impurity 3 CAS 205755-86-8
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 205755-86-8 |
| Molecular Formula | C14H11ClF3NO2 |
| Molecular Weight | 317.69 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Efavirenz Impurity 3 (CAS 205755-86-8) is a high-purity pharmacopoeial impurity standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C14H11ClF3NO2. Molecular weight: 317.69 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C14H11ClF3NO2 |
| Molecular Weight | 317.69 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 |
| 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.) | 2015 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 1 |
Related Efavirenz Standards
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- rac Efavirenz-d4 (CAS 1246812-58-7)
- Efavirenz (CAS 154598-52-4)
- Efavirenz Impurity 10 (CAS 2125704-30-3)
- Efavirenz Impurity 2 (CAS 154801-74-8)
- Efavirenz Impurity 24 (CAS CATO-C4X-162724)
Recommended Standards
- Metflurazon (CAS 23576-23-0)
- (2R,3S,4S,5R)-2-(2-Chloro-6-(methylamino)-9H-purin-9-yl)-4-fluoro-5-(hydroxymethyl)tetrahydrofuran-3-ol (CAS 122654-31-3)
- Ethyl 2-Chloro-5-[2-(trifluoromethyl)phenyl]-1H-pyrrole-3-carboxylate (CAS 881673-68-3)
- Pretomanid Impurity 9 (CAS CATO-C4X-26069)
- Crisaborole Impurity 4 (CAS 403-54-3)
- tert-Butyl 2-(5-methyl-6-(piperidin-1-yl)pyridin-3-yl)pyrrolidine-1-carboxylate (CAS 1352490-79-9)
- 7-Chlorothiazolo[5,4-d]pyrimidin-2-amine (CAS 1578216-09-7)
- 4-[(2,4-Dichlorophenoxy)methyl]piperidine (CAS 946713-70-8)
- Danicopan (ACH-4471) (CAS 1903768-17-1)
- Neuropeptide EI (human, mouse, rat) (CAS 125934-45-4)
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 13829788188 / jacky.chen@cato-chem.com