Adefovir Impurity 21 CAS CATO-C4X-115221
| CAS No. | CATO-C4X-115221 |
| Molecular Formula | C9H15N5O7P2 |
| Molecular Weight | 367.19 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Adefovir Impurity 21 (CAS CATO-C4X-115221), a pharmacopoeial impurity reference standard (molecular formula C9H15N5O7P2, MW 367.19 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C9H15N5O7P2, Adefovir Impurity 21 contains a nitrogen-containing heterocyclic scaffold, an amide group, a phosphate ester group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 367.19 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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), Adefovir Impurity 21 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 | C9H15N5O7P2 |
| Molecular Weight | 367.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 5 |
Related Adefovir Standards
- Adefovir Impurity 22 (CAS CATO-C4X-115222)
- Adefovir Impurity 1 (CAS 142341-05-7)
- Adefovir Impurity 37 (CAS CATO-C4X-115237)
- Adefovir Impurity 17 (CAS 1875153-79-9)
- Adefovir Dipivoxil Impurity 32 (CAS 374678-38-3)
- Adefovir Impurity 5 (CAS 116384-53-3)
- Adefovir Impurity 4 (CAS 142341-04-6)
- Adefovir impurity 11 (CAS CATO-C4X-115211)
Recommended Standards
- Tenofovir Monophosphate (CAS 206646-04-0)
- 2,2'-Bis[(5-chloro-2-hydroxyphenyl)methylene]-carbonic Dihydrazide (CAS 6638-52-4)
- (2-Quinaldinate)(bicyclo-2,2,1-hepta-2,5-diene)rhodium (CAS 119854-16-9)
- Clonazepam Impurity 20 (CAS CATO-C4X-140320)
- Eperisone impurity 10 (CAS CATO-C4X-227910)
- CAS CATO-C3D-262676 (CAS CATO-C3D-262676)
- Carfilzomib Impurity 6 (CAS CATO-C4X-10226)
- 3-((Pyrrolidine-1-carbonothioyl)thio)propanoic acid (CAS 81994-77-6)
- 5-(Difluoromethyl)-4-nitro-3-(trifluoromethyl)picolinonitrile (CAS 1805187-69-2)
- 1-(1-(1H-Benzo[d][1,2,3]triazol-1-yl)ethyl)pyrrolidin-2-one (CAS 143815-29-6)
- Glycyrrhizic Acid Impurity 38 (CAS CATO-C4X-253738)
- 2-Methyl-4-(o-tolyloxy)butan-2-ol (CAS 1239478-95-5)
- 2-(4-Methoxyphenyl)-1H-benzo[d]imidazole-5-carboxamide (CAS 178970-16-6)
- [14-31]-Semaglutide (CAS CATO-C4X-2226262)
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