Etravirine impurity 11 CAS CATO-C4X-135611
| CAS No. | CATO-C4X-135611 |
| Molecular Formula | C20H17BrN6O2 |
| Molecular Weight | 453.29 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Etravirine impurity 11 (CAS CATO-C4X-135611), a pharmacopoeial impurity reference standard (molecular formula C20H17BrN6O2, MW 453.29 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C20H17BrN6O2, Etravirine impurity 11 contains a steroid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 453.29 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
CATO manufactures Etravirine impurity 11 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 | C20H17BrN6O2 |
| Molecular Weight | 453.29 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 6 |
Related Etravirine Standards
Recommended Standards
- Sofosbuvir Impurity N40 (CAS 1256490-52-4)
- Linagliptin Impurity 80 (CAS 2446799-71-7)
- Ethyl (3-(4-chlorophenyl)-8-((4-chlorophenyl)amino)pyrido[2,3-b]pyrazin-6-yl)carbamate (CAS 21395-43-7)
- Linagliptin Impurity 72 (CAS CATO-C4X-110172)
- Docetaxel Impurity 24 (CAS 132201-32-2)
- Posaconazole impurity 222 (CAS CATO-C4X-1208222)
- Prostaglandin Impurity N1 (CAS 36150-02-4)
- 1-((3-Cyclopropyl-1H-pyrazol-5-yl)methyl)piperazine (CAS 1343040-80-1)
- Heptane-d16 (CAS 33838-52-7)
- 1-(1-Isopropyl-3,5-dimethyl-1h-pyrazol-4-yl)ethan-1-amine (CAS 1007501-10-1)
- N-(4-ethoxyphenyl)-2-((1-phenyl-1H-tetrazol-5-yl)thio)acetamide (CAS 301194-13-8)
- (S)-2-(3-((1R,2R)-2-Aminocyclohexyl)thioureido)-N-benzyl-N,3,3-trimethylbutanamide (CAS 479423-21-7)
- 8-Fluoro-3,4-dihydrobenzo[f][1,4]oxazepin-5(2H)-one (CAS 844648-10-8)
- Semaglutide impurity 194 (CAS CATO-C4X-2226194)
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