Febuxostat Impurity 98 CAS CATO-C4X-116298
| CAS No. | CATO-C4X-116298 |
| Molecular Formula | C28H29N3O6S2 |
| Molecular Weight | 567.68 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 Febuxostat Impurity 98.
CATO supplies Febuxostat Impurity 98 (CAS CATO-C4X-116298), a pharmacopoeial impurity reference standard (molecular formula C28H29N3O6S2, MW 567.68 g/mol) used for the identification and quantification of trace impurities in APIs.
Febuxostat Impurity 98 (C28H29N3O6S2) contains a steroid core, an amide group, a sulfone 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).
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), Febuxostat Impurity 98 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 | C28H29N3O6S2 |
| Molecular Weight | 567.68 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 2 |
Related Febuxostat Standards
- Febuxostat Impurity 80 (CAS CATO-C4X-116280)
- Febuxostat Acyl-beta-D-glucuronide (CAS 1351692-92-6)
- Febuxostat Impurity 8 (CAS 1346238-13-8)
- Febuxostat Impurity 17 (CAS 1330632-47-7)
- Febuxostat Impurity 9 (CAS 1330632-48-8)
- Febuxostat Impurity 113 (CAS CATO-C4X-1162113)
- Febuxostat Impurity 31 (CAS CATO-C4X-116231)
- Febuxostat Impurity 74 (CAS 1312815-36-3)
Recommended Standards
- QS 11 (CAS 944328-88-5)
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- 2-Docosahexaenoyl-sn-glycero-3-phosphocholine(~90%) (CAS 159407-32-6)
- Ribavirin Impurity E (CAS 58151-90-9)
- Ilaprazole Impurity 17 (CAS 172152-35-1)
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- 1-[4-(3-Aminocyclopentyl)-1-piperazinyl]ethanone (CAS 1519552-41-0)
- Ethyl 6-iodobenzo[d]isoxazole-3-carboxylate (CAS 1352395-67-5)
- 1-Benzylpyrazole-3-carbonitrile (CAS 1427475-28-2)
- 1-(Ethanesulfonyl)-2-methoxy-4-nitrobenzene (CAS 75259-32-4)
- 3-[1-(4-Aminobutyl)-1H-1,2,3-triazol-4-yl]aniline (CAS 1626413-52-2)
- Semaglutide impurity 104(Fmoc-D-His-Aib) (CAS 2171211-18-8)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com