Didanosine EP Impurity E CAS 31766-13-9
| CAS No. | 31766-13-9 |
| Molecular Formula | C10H10N4O4 |
| Molecular Weight | 250.21 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Didanosine EP Impurity E (C10H10N4O4) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 250.21 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies Didanosine EP Impurity E (CAS 31766-13-9), a pharmacopoeial impurity reference standard (molecular formula C10H10N4O4, MW 250.21 g/mol) used for the identification and quantification of trace impurities in APIs.
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), Didanosine EP Impurity E 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 | C10H10N4O4 |
| Molecular Weight | 250.21 g/mol |
| Appearance | Pale yellow to 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Nitrogen Atoms | 4 |
Related Didanosine Standards
Recommended Standards
- Sulfadiazine lmpurity 5 (CAS CATO-C4X-150415)
- Methacrylaldehyde-2,4-dinitrophenylhydrazone (CAS 5077-73-6)
- 948290-59-3 2-Chloro-3-(chloromethyl)-5,7-dimethylquinoline DTXSID80588972 (CAS 948290-59-3)
- Crotonaldehyde-2,4-Dinitrophenylhydrazone (CAS 1527-96-4)
- Clopidogrel EP Impurity E (CAS 90055-68-8)
- Fenofibrate Impurity 15 (CAS 34183-01-2)
- Perospirone impurity 48 (CAS CATO-C4X-245848)
- 2-(2-Oxo-2-(piperidin-1-yl)ethyl)isoindoline-1,3-dione (CAS 53775-25-0)
- Cefpirome Impurity 14 (CAS CATO-C4X-120714)
- 4-(((Benzyloxy)carbonyl)amino)-5-ethoxy-5-oxopentanoic acid (CAS 5672-81-1)
- 1-((2,3-Dichlorophenoxy)methyl)-1h-pyrazole-3-carboxylic acid (CAS 1004193-01-4)
- 3-(Chloromethyl)-5-(4-chlorophenyl)-1,2-oxazole (CAS 343374-64-1)
- (R)-2,3,3-Trimethyl-2,3-dihydronaphtho[1,2-b]furan-4,5-dione (CAS 33404-57-8)
- Calcineurin Autoinhibitory Peptide (CAS 148067-21-4)
Why CATO?
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