Efavirenz Impurity 26 CAS 2177283-35-9
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 2177283-35-9 |
| Molecular Formula | C16H13ClF3NO2 |
| Molecular Weight | 343.73 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Efavirenz Impurity 26 (CAS 2177283-35-9) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C16H13ClF3NO2. Molecular weight: 343.73 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C16H13ClF3NO2 |
| Molecular Weight | 343.73 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1998 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 1 |
Related Efavirenz Standards
- Efavirenz RC 2 (CAS 173676-54-5)
- Efavirenz Impurity 27 (CAS CATO-C4X-162727)
- Efavirenz Impurity 8 (CAS 211563-40-5)
- Efavirenz Impurity (6-chloro-4-[2-(2-methylcyclopropyl)ethynyl]-4-(trifluoromethyl)-2H-3,1-benzoxazin-2-one) (CAS 1217623-65-8)
- Efavirenz Impurity 7 (CAS 211563-41-6)
- Efavirenz-13C6 (CAS 1261394-62-0)
- rac Efavirenz-d5(major) (CAS 1132642-95-5)
- rac Efavirenz-d4 (CAS 1246812-58-7)
Recommended Standards
- N1-[4-(tert-butyl)phenyl]-3-[5-chloro-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl]acrylamide (CAS 648859-64-7)
- 4-Chloro-N-(6-methoxypyridin-3-yl)-2-nitrobenzenesulfonamide (CAS 1022580-32-0)
- N-(4-chlorophenyl)-2,2,2-trifluoro-N-(4-methoxybenzyl)acetamide (CAS 860649-56-5)
- Meropenem impurity 29 (CAS CATO-C4X-130929)
- Entacapone Impurity 28 (CAS 2450-26-2)
- 2-(Methoxymethoxy)benzoic Acid 5876-91-5 o-(Methoxymethoxy)benzoic Acid (CAS 5876-91-5)
- 3-(Ethoxymethyl)-4-methoxybenzaldehyde (CAS 832737-85-6)
- (2,6-Dimethoxyphenyl)(quinolin-3-yl)methanone (CAS 1187163-88-7)
- 1h,2h-Pyrrolo[1,2-d][1,2,4]triazin-1-one (CAS 50269-86-8)
- Semaglutide Impurity 192 (CAS CATO-C4X-2226192)
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