Entecavir Impurity 72 CAS CATO-C4X-107772
| CAS No. | CATO-C4X-107772 |
| Molecular Formula | C51H47N5O4 |
| Molecular Weight | 793.95 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
CATO supplies Entecavir Impurity 72 (CAS CATO-C4X-107772), a pharmacopoeial impurity reference standard (molecular formula C51H47N5O4, MW 793.95 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C51H47N5O4, Entecavir Impurity 72 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 793.95 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.
As a certified reference material (CRM), Entecavir Impurity 72 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 | C51H47N5O4 |
| Molecular Weight | 793.95 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) | 31.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 5 |
Related Entecavir Standards
- Entecavir Impurity 53 (CAS CATO-C4X-107753)
- Entecavir Impurity 82 (CAS CATO-C4X-107782)
- Entecavir Impurity 87 (CAS CATO-C4X-107787)
- Entecavir Impurity 88 (CAS CATO-C4X-107788)
- Entecavir Impurity 49 (CAS CATO-C4X-107749)
- Entecavir Impurity 50 (CAS CATO-C4X-107750)
- Entecavir Impurity 51 (CAS CATO-C4X-107751)
- Entecavir Impurity 52 (CAS CATO-C4X-107752)
Recommended Standards
- Endo BCN-PEG12-acid-1 (CAS 2702973-69-9)
- Protoveratrine A (CAS 143-57-7)
- Lurbinectedin Impurity 3 (CAS CATO-C4X-31143)
- 6’-Methylvinorelbine (CAS 789446-24-8)
- Rivaroxaban Impurity 37 (CAS 446292-04-2)
- Risperidone Impurity 43 (CAS 439082-09-4)
- Doxapram impurity 39 (CAS 2156014-06-9)
- (S)-2-amino-2-(3-chloro-4-(trifluoromethyl)phenyl)ethan-1-ol (CAS 1212810-68-8)
- N,N-Diethyl-5,6-dihydrospiro[imidazo[2,1-c][1,4]oxazine-8,4'-piperidine]-6-carboxamide (CAS 1422133-76-3)
- N-1-Adamantyladamantan-1-amine hydrochloride (CAS 561327-49-9)
- 1-Pentacyclo[4.2.0.02,5.03,8.04,7]oct-1-yl-ethanone (CAS 80606-52-6)
- 1-Ethyl-3-(pentan-3-yl)-1,4,5,6-tetrahydropyrrolo[2,3-c]pyrazole (CAS 641587-28-2)
- 5''-(4'-Carboxy-[1,1'-biphenyl]-2-yl)-[1,1':2',1'':3'',1''':2''',1''''-quinquephenyl]-4,4''''-dicarboxylicacid (CAS 1351983-66-8)
- Liraglutide-d8 Tritrifluoroacetate (CAS CATO-C4X-199223)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com