Remdesivir Impurity 28 CAS CATO-C4X-210028
| CAS No. | CATO-C4X-210028 |
| Molecular Formula | C27H35N6O8P |
| Molecular Weight | 602.58 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Remdesivir Impurity 28 (C27H35N6O8P) contains a nitrogen-containing heterocyclic scaffold, an amide group, a phosphate ester group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO supplies Remdesivir Impurity 28 (CAS CATO-C4X-210028), a pharmacopoeial impurity reference standard (molecular formula C27H35N6O8P, MW 602.58 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C27H35N6O8P |
| Molecular Weight | 602.58 g/mol |
| 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) | 13.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 6 |
Related Remdesivir Standards
- Remdesivir (CAS 1809249-37-3)
- Remdesivir Impurity 27 (CAS CATO-C4X-210027)
- Remdesivir Impurity 31 (CAS CATO-C4X-210031)
- Remdesivir-d4 (CAS CATO-C4X-210043)
- Remdesivir Impurity 49 (CAS CATO-C4X-210049)
- Remdesivir Impurity 50 (CAS CATO-C4X-210050)
- Remdesivir Impurity 42 (CAS 1191237-66-7)
- Remdesivir Impurity 26 (CAS CATO-C4X-210026)
Recommended Standards
- 2,9-Bis(4-methoxyphenyl)anthra[2,1,9-def:6,5,10-d'e'f']diisoquinoline-1,3,8,10(2H,9H)-tetraone (CAS 6424-77-7)
- Etoposide EP Impurity I (CAS 111712-42-6)
- Ceritinib Impurity 75 (CAS CATO-C4X-104875)
- Flurbiprofen Impurity 126 (CAS CATO-C4X-1444126)
- Palbociclib Impurity 192 (CAS CATO-C4X-1125192)
- Upadacitinib Impurity 197 (CAS CATO-C4X-2405197)
- Imatinib Impurity 72 (CAS CATO-C4X-106872)
- 6-Chloro-3-iodo-2-methylimidazo[1,2-a]pyridine (CAS 1935106-50-5)
- 2-3-4-6-Tetra-O-benzoyl-D-galactopyranose (CAS 627466-84-6)
- 2-Bromo-6-fluoro-3-methoxypyridine (CAS 1256810-97-5)
- N-(5-bromo-2-fluorophenyl)thiazolidine-4-carboxamide hydrochloride (CAS 1575751-74-4)
- 2-Amino-6-(cyclopentylamino)pyrimidin-4(3H)-one (CAS 7400-24-0)
- 2-hydrazono-2,3-dihydro-1H-imidazole (CAS 59214-44-7)
- Polyphemusin II-Derived Peptide (CAS 229030-20-0)
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