Remdesivir Impurity 42 CAS 1191237-66-7
| CAS No. | 1191237-66-7 |
| Molecular Formula | C33H34N4O5 |
| Molecular Weight | 566.65 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Remdesivir Impurity 42 (CAS 1191237-66-7), a pharmacopoeial impurity reference standard (molecular formula C33H34N4O5, MW 566.65 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C33H34N4O5, Remdesivir Impurity 42 contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 566.65 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 Remdesivir Impurity 42 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 | C33H34N4O5 |
| Molecular Weight | 566.65 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 19.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 4 |
Related Remdesivir Standards
- Remdesivir Impurity 3 (CAS 1355357-49-1)
- Remdesivir Impurity 40 (CAS 1369903-46-7)
- Remdesivir Impurity 41 (CAS CATO-C4X-210041)
- Remdesivir Impurity 50 (CAS CATO-C4X-210050)
- Remdesivir Impurity 10 (CAS 1911578-73-8)
- Remdesivir Impurity 2 (CAS 1355049-94-3)
- Remdesivir (CAS 1809249-37-3)
- Remdesivir Impurity 27 (CAS CATO-C4X-210027)
Recommended Standards
- Cefcapene Impurity 18 (CAS CATO-C4X-182418)
- nsifentrine impurity 8 (CAS CATO-C4X-33538)
- Deuteroporphyrin IX 2-vinyl, 4-hydroxymethyl (CAS 141407-08-1)
- (H-Cys-Tyr-OH)2 (Disulfide bond) (CAS 7369-94-0)
- Tebipenem Impurity N1 (CAS 161715-20-4)
- Posaconazole lmpurity 177 (CAS CATO-C4X-1208177)
- Tepotinib impurity 3 (CAS 1103506-82-6)
- 1-(3-Methoxy-4-methylphenyl)-N-methylmethanamine (CAS 1094755-12-0)
- N-(7H-purin-6-yl)acrylamide (CAS 222612-97-7)
- N,N-Bis(2-methoxyethyl)-5-(tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-amine (CAS 2490666-13-0)
- N-[(4-Fluorophenyl)methyl]-2-hydroxy-3,5-diiodobenzamide (CAS 439107-28-5)
- 2-methyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzo[d]imidazole (CAS 1314216-34-6)
- 8-Azidoadenosine 3,5-cyclic monophosphosphate free acid (CAS 31966-52-6)
- Gastrin Tetrapeptide (CAS 1947-37-1)
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