Entecavir Impurity 52 CAS CATO-C4X-107752
| CAS No. | CATO-C4X-107752 |
| Molecular Formula | C52H47N5O3 |
| Molecular Weight | 789.96 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Entecavir Impurity 52.
Entecavir Impurity 52 (CAS CATO-C4X-107752) is a certified pharmaceutical impurity reference standard with the molecular formula C52H47N5O3 and a molecular weight of 789.96 g/mol.
Entecavir Impurity 52 (C52H47N5O3) contains a nitrogen-containing heterocyclic scaffold, an amide 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
As a certified reference material (CRM), Entecavir Impurity 52 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 | 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 51 (CAS CATO-C4X-107751)
- 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)
- Ceftazidime Impurity 75 (CAS CATO-C4X-121275)
- β-Casomorphin (bovine) (CAS 72122-62-4)
- DMT-dC(ac)phosphoramidite (CAS 154110-40-4)
- Meldonium EP Impurity B (CAS 44024-83-1)
- Posaconazole Impurity 105 (CAS CATO-C4X-1208105)
- Ceritinib Impurity 17 (CAS CATO-C4X-104817)
- 6-((2S)-2-piperidyl)pyridine-3-carboxylic acid (CAS 1213498-39-5)
- [3-(Methylamino)propyl]triphenylphosphonium Bromide (CAS 145126-87-0)
- 2-(3-Nitrophenyl)acetonitrile (CAS 621-50-1)
- (R)-1-[(4-Methylphenyl)sulfonyl]-2-phenylaziridine (CAS 62596-62-7)
- 4-((1-Methyl-1H-pyrazol-3-yl)methoxy)aniline (CAS 1260658-94-3)
- N-ethyl-3-methylpyrazin-2-amine (CAS 1490918-53-0)
- Semaglutide impurity 193 (CAS CATO-C4X-2226193)
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