Febuxostat Impurity 59 CAS 2073891-59-3
| CAS No. | 2073891-59-3 |
| Molecular Formula | C15H13NO5S |
| Molecular Weight | 319.33 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Febuxostat Impurity 59 (CAS 2073891-59-3), a pharmacopoeial impurity reference standard (molecular formula C15H13NO5S, MW 319.33 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Febuxostat Impurity 59 (C15H13NO5S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 319.33 g/mol, it falls into the moderately-high-molecular-weight range. 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 59 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 | C15H13NO5S |
| Molecular Weight | 319.33 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Febuxostat Standards
- Febuxostat Impurity 29 (CAS 144060-62-8)
- Febuxostat Impurity 93 (CAS CATO-C4X-116293)
- Febuxostat Impurity 46 (CAS 144060-97-9)
- Febuxostat Impurity 92 (CAS CATO-C4X-116292)
- Febuxostat (CAS 144060-53-7)
- Febuxostat Impurity 112 (CAS CATO-C4X-1162112)
- Febuxostat Impurity 24 (CAS 1335202-59-9)
- Febuxostat Impurity 41 (CAS CATO-C4X-116241)
Recommended Standards
- Tert-butyl (3-(diethoxyphosphoryl)bicyclo[1.1.1]pentan-1-yl)carbamate (CAS 2839376-08-6)
- Norfloxacin Impurity 63 (CAS 106847-42-1)
- N-Butyl-1-(4-fluorophenyl)-4-methoxy-6-oxo-1,6-dihydropyridazine-3-carboxamide (CAS 921792-22-5)
- Norfloxacin (CAS 70458-96-7)
- Pentoxifylline Impurity 14 (CAS 16015-11-5)
- Paroxetine HCl Anhydrous EP Impurity B (CAS 533-31-3)
- Olaparib Impurity 27 (CAS 1759-53-1)
- 4-Methyl-2,6-dioxo-8-(1-oxo-3-phenylpropan-2-yl)hexahydro-[1,3,2]oxazaborolo[2,3-b][1,3,2]oxazaborol-4-ium-8-uide (CAS 1380504-22-2)
- 198822-05-8 (+/-)-3-Aminopent-4-enoic acid hydrochloride MFCD20481902 (CAS 198822-05-8)
- 3-Hexynoic acid (CAS 17814-72-1)
- 2-Vinylphenylboronic Acid (CAS 15016-42-9)
- 5-((1h-Indol-3-yl)methyl)-2-amino-4-oxo-4,5-dihydro-1h-pyrrole-3-carbonitrile (CAS 929974-50-5)
- (3-(Piperidin-4-yl)-5-(trifluoromethyl)phenyl)boronic acid (CAS 2225170-15-8)
- Fragment-[3-31]-Liraglutide (CAS CATO-C4X-199232)
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