Proxyphylline Impurity 9 CAS 93284-16-3
| CAS No. | 93284-16-3 |
| Molecular Formula | C9H16N4O3 |
| Molecular Weight | 228.25 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Proxyphylline Impurity 9 (C9H16N4O3) 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 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).
CATO supplies Proxyphylline Impurity 9 (CAS 93284-16-3), a pharmacopoeial impurity reference standard (molecular formula C9H16N4O3, MW 228.25 g/mol) used for the identification and quantification of trace impurities in APIs.
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), Proxyphylline Impurity 9 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 | C9H16N4O3 |
| Molecular Weight | 228.25 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1983 |
| Nitrogen Atoms | 4 |
Related Proxyphylline Standards
Recommended Standards
- Daprodustat Impurity 42 (CAS CATO-C4X-240742)
- Tetraacetylethylenediamine (CAS 10543-57-4)
- N-Nitroso Phentolamine Mesylate EP Impurity C (CAS 497930-24-2)
- H-Gly-Pro-Gly-NH2 (CAS 141497-12-3)
- Dalilesen Impurity 9 (CAS CATO-C4X-30109)
- Mirogabalin Impurity 81 (CAS 1138246-18-0)
- Pazufloxacin Impurity 1 (CAS CATO-C4X-23321)
- (R)-3-Amino-4-(1H-indol-3-yl)butanoic acid hydrochloride (CAS 477250-51-4)
- 2,1-Benzisoxazolium, 3-[2-[4-(dimethylamino)phenyl]ethenyl]-1-methyl-, perchlorate (1:1) 64872-13-5 CTK2F2447 (CAS 64872-13-5)
- n-Tetradecyltrichlorosilane (CAS 18001-60-0)
- 1-(2-Chlorophenyl)-N-methyl-3-(pyrrolidin-1-yl)propan-1-amine (CAS 672309-98-7)
- Desmethoxy Gatifloxacin Trifluoroacetic Acid Salt (CAS 1215348-50-7)
- 5-Bromo-1,2-dimethoxy-3-nitrobenzene (CAS 343942-04-1)
- Semaglutide-d15 (CAS 910463-68-2(non-labelled))
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