Entecavir Impurity 51 CAS CATO-C4X-107751
| CAS No. | CATO-C4X-107751 |
| Molecular Formula | C52H47N5O3 |
| Molecular Weight | 789.96 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Entecavir Impurity 51 is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 789.96 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a process- or degradation-related impurity, Entecavir Impurity 51 (CAS CATO-C4X-107751, C52H47N5O3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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 Entecavir Impurity 51 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 | C52H47N5O3 |
| Molecular Weight | 789.96 g/mol |
| Purity | >95% |
| 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) | 32.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 5 |
Related Entecavir Standards
- Entecavir Impurity 49 (CAS CATO-C4X-107749)
- Entecavir Impurity 50 (CAS CATO-C4X-107750)
- Entecavir Impurity 52 (CAS CATO-C4X-107752)
- Entecavir Impurity 73 (CAS CATO-C4X-107773)
- Entecavir Impurity 74 (CAS CATO-C4X-107774)
- Entecavir Impurity 86 (CAS CATO-C4X-107786)
- Entecavir Impurity 53 (CAS CATO-C4X-107753)
- Entecavir Impurity 72 (CAS CATO-C4X-107772)
Recommended Standards
- K-Ras ligand-Linker Conjugate 5 (CAS 2378261-85-7)
- β-Casomorphin (bovine) (CAS 72122-62-4)
- Cefotaxime Impurity 62 (CAS CATO-C4X-120162)
- Ceftazidime Impurity 75 (CAS CATO-C4X-121275)
- Pirfenidone Impurity 42 (CAS 3510-66-5)
- Potassium Clavulanate EP Impurity J HCl (CAS 7677-21-6)
- Clotrimazole Impurity 21 (CAS 29647-82-3)
- 6-Hydroxy-2-(1-methylcyclopropyl)pyrimidin-4(3H)-one (CAS 1527771-78-3)
- 1-Phenylmethanesulfonylpiperidin-4-amine hydrochloride (CAS 1315369-08-4)
- SYH2092A-013105 (CAS CATO-CPTD788856)
- Itraconazole-d9 (CAS CATO-C4X-149751)
- 5-Chloro-6-methoxy-4-methyl-8-nitroquinolin-2(1H)-one (CAS 189746-23-4)
- 3-(4-Methoxy-2-methylphenyl)-2,5-dimethyl-N-[(S)-1-(3-methyl-1,2,4-oxadiazol-5-yl)propyl]pyrazolo[1,5-a]pyrimidin-7-amine (CAS 885220-61-1)
- Semaglutide impurity 206 (CAS CATO-C4X-2226206)
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