Entecavir Impurity 30 CAS CATO-C4X-107730
| CAS No. | CATO-C4X-107730 |
| Molecular Formula | C15H19N5O5 |
| Molecular Weight | 349.34 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 30.
As a process- or degradation-related impurity, Entecavir Impurity 30 (CAS CATO-C4X-107730, C15H19N5O5) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Entecavir Impurity 30 (C15H19N5O5) contains a flavonoid core, 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.
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.
As a certified reference material (CRM), Entecavir Impurity 30 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 | C15H19N5O5 |
| Molecular Weight | 349.34 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 5 |
Related Entecavir Standards
- Entecavir Impurity 27 (CAS CATO-C4X-107727)
- Entecavir Impurity 28 (CAS CATO-C4X-107728)
- Entecavir Impurity 29 (CAS CATO-C4X-107729)
- Entecavir-(R)-Methylethyl Carboxylic Acid (CAS 1415118-53-4)
- Entecavir-(S)-Methylethyl Carboxylic Acid (CAS 1415118-52-3)
- Entecavir 4-Dimethylsilyl USP Impurity (CAS 870614-82-7)
- Entecavir Impurity C66 (CAS 156422-39-8)
- Entecavir Impurity 19 (CAS 1030919-51-7)
Recommended Standards
- Eltrombopag Impurity 107 (CAS CATO-C4X-1198107)
- Naphtho[1',2':4,5]imidazo[1,2-a]pyridine-5,6-dione (CAS 97339-24-7)
- Eltrombopag Impurity 135 (CAS CATO-C4X-1198135)
- N-(5-(5,6-Dihydro-1,4-dioxin-2-yl)-1,3,4-oxadiazol-2-yl)-[1,1'-biphenyl]-4-carboxamide (CAS 851094-77-4)
- Ataluren Impurity 1 (CAS CATO-C4X-30061)
- Pomalidomide Impurity 45 (CAS 1957235-66-3)
- Vilanterol Impurity 4 (CAS CATO-C4X-19354)
- 4-Iodo-2-(trifluoromethyl)-1H-pyrrolo[2,3-b]pyridine (CAS 1014613-46-7)
- Varenicline Impurity N22 (CAS 2759288-58-7)
- 2-Methyl-1-(thiophen-3-yl)propan-2-ol (CAS 799773-82-3)
- 2-(Difluoromethyl)-4-fluoro-1-(trifluoromethyl)benzene (CAS 1214358-19-6)
- 3-Methyl-2-(naphthalene-2-sulfonamido)butanoic acid (CAS 115239-41-3)
- 8-Methoxy-chroman-3-carboxylic acid methyl ester (CAS 885271-65-8)
- D-Val23-Tirzepatide (CAS CATO-CPTD788911)
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