Remdesivir Impurity 21 HCl CAS 2096981-79-0
| CAS No. | 2096981-79-0 |
| Molecular Formula | C9H19NO2 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Remdesivir Impurity 21 HCl (C9H19NO2HCl) is characterized by an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies Remdesivir Impurity 21 HCl (CAS 2096981-79-0), a pharmacopoeial impurity reference standard (molecular formula C9H19NO2HCl, MW 209.71 g/mol) used for the identification and quantification of trace impurities in APIs.
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.
As a certified reference material (CRM), Remdesivir Impurity 21 HCl meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C9H19NO2 HCl |
| Molecular Weight | 209.71 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 0.0 |
| CAS Registry Year (est.) | 1997 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Remdesivir Standards
- Remdesivir Impurity 44 (CAS 1187550-21-5)
- Remdesivir Impurity 42 (CAS 1191237-66-7)
- Remdesivir Impurity 5 (CAS 1191237-69-0)
- Remdesivir Impurity 9 (CAS 1191237-80-5)
- Remdesivir Impurity 25 (CAS 1256490-31-9)
- Remdesivir Impurity 38 (CAS 13199-25-2)
- Remdesivir Impurity 8 (CAS 1354823-36-1)
- Remdesivir Impurity 34 (CAS 1354823-37-2)
Recommended Standards
- Epinephrine Impurity 82 (CAS CATO-C4X-184982)
- Iguratimod Impurity 19 (CAS CATO-C4X-182619)
- Alogliptin Impurity 30 (CAS CATO-C4X-109930)
- 4-(4-Chlorophenyl)-2H-pyrido[2,3-e][1,2,4]thiadiazin-3(4H)-one 1,1-dioxide (CAS 1774901-14-2)
- tert-Butyl (2-(tetrahydro-2H-thiopyran-4-yl)thiazol-4-yl)carbamate (CAS 1934510-71-0)
- 7-Methyl-1,2,3,4-tetrahydroquinoxalin-6-amine (CAS 804427-12-1)
- 3-Chloro-N-(4-ethoxybenzyl)-4-methylaniline (CAS 1036537-11-7)
- 2H-Thiazolo[5,4-e]indole (CAS 42852-43-7)
- Ethyl (4-methylpiperidin-1-yl)acetate (CAS 39981-81-2)
- Semaglutide impurity 203 (CAS CATO-C4X-2226203)
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