Efavirenz Impurity 7 CAS 211563-41-6
| CAS No. | 211563-41-6 |
| Molecular Formula | C16H15ClF3NO3 |
| Molecular Weight | 361.74 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 361.74 g/mol gives Efavirenz Impurity 7 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Efavirenz Impurity 7 (CAS 211563-41-6) is a certified pharmaceutical impurity reference standard with the molecular formula C16H15ClF3NO3 and a molecular weight of 361.74 g/mol.
Based on its molecular formula C16H15ClF3NO3, Efavirenz Impurity 7 contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 361.74 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 Efavirenz Impurity 7 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 | C16H15ClF3NO3 |
| Molecular Weight | 361.74 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.) | 2017 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 1 |
Related Efavirenz Standards
- Efavirenz Impurity 8 (CAS 211563-40-5)
- Efavirenz Impurity 27 (CAS CATO-C4X-162727)
- Efavirenz RC 2 (CAS 173676-54-5)
- Efavirenz Impurity 26 (CAS 2177283-35-9)
- Efavirenz Impurity (6-chloro-4-[2-(2-methylcyclopropyl)ethynyl]-4-(trifluoromethyl)-2H-3,1-benzoxazin-2-one) (CAS 1217623-65-8)
- Efavirenz-13C6 (CAS 1261394-62-0)
- rac Efavirenz-d5(major) (CAS 1132642-95-5)
- rac Efavirenz-d4 (CAS 1246812-58-7)
Recommended Standards
- 7-Chloro-5-fluoro-2-({[4-(trifluoromethyl)phenyl]methyl}sulfanyl)-1,3-benzoxazole (CAS 866010-51-7)
- 1-(2-Chloro-4-fluorobenzyl)-3-formyl-6-methoxy-1H-indole-2-carboxylic acid (CAS 1243023-71-3)
- 5-Bromo-6-chloro-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrrolo[2,3-b]pyridine (CAS 2412348-14-0)
- N-(1-(tert-Butyl)-4-(5-chloro-2-hydroxyphenyl)-1H-pyrazol-3-yl)-2,2,2-trifluoroacetamide (CAS 1958100-69-0)
- Vonoprazan Fumarate Impurity 3 (CAS 881674-56-2)
- Drospirenone EP Impurity C (CAS 116298-21-6)
- Tenofovir alafenamide Impurity 90 (CAS CATO-C4X-179790)
- N-(2-bromophenyl)-2-methylpentanamide (CAS 69714-31-4)
- 1-(2-Phenylpyrazolo[1,5-a]pyridin-3-yl)ethan-1-one (CAS 122643-81-6)
- Paclitaxel Photodegradant (CAS 146139-03-9)
- 4-(2-Methylthiazol-4-yl)butan-1-amine (CAS 325491-81-4)
- Dimethipin (CAS 55290-64-7)
- N-((2,3-dimethylcyclohexyl)methyl)thietan-3-amine (CAS 1877244-54-6)
- Semaglutide Impurity 145 (CAS CATO-C4X-2226145)
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