Didanosine Impurity 2 CAS 890-38-0
| CAS No. | 890-38-0 |
| Molecular Formula | C10H12N4O4 |
| Molecular Weight | 252.23 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Didanosine Impurity 2 (CAS 890-38-0, C10H12N4O4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Didanosine Impurity 2 (C10H12N4O4) contains an amino-acid-derived structure, 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), Didanosine Impurity 2 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 | C10H12N4O4 |
| Molecular Weight | 252.23 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 4 |
Related Didanosine Standards
Recommended Standards
- Baricitinib Impurity 90 (CAS CATO-C4X-226090)
- Butyraldehyde-2,4-Dinitrophenylhydrazone (CAS 1527-98-6)
- Baricitinib Impurity 89 (CAS CATO-C4X-226089)
- Isobutyraldehyde-2,4-dinitrophenylhydrazone (CAS 2057-82-1)
- Alectinib Impurity 13 (CAS 1256585-29-1)
- Malic Acid Impurity 10 (CAS 1800467-68-8)
- Haloperidol Decanoate EP Impurity F (CAS 1797131-50-0)
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- Semaglutide Impurity 190 (CAS CATO-C4X-2226190)
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