Febuxostat Impurity 41 CAS CATO-C4X-116241
| CAS No. | CATO-C4X-116241 |
| Molecular Formula | C16H16N2O3S |
| Molecular Weight | 316.37 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Febuxostat Impurity 41 (CAS CATO-C4X-116241), a pharmacopoeial impurity reference standard (molecular formula C16H16N2O3S, MW 316.37 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C16H16N2O3S, Febuxostat Impurity 41 contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 316.37 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), Febuxostat Impurity 41 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 | C16H16N2O3S |
| Molecular Weight | 316.37 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Febuxostat Standards
- Febuxostat (CAS 144060-53-7)
- Febuxostat Impurity 112 (CAS CATO-C4X-1162112)
- Febuxostat Impurity 24 (CAS 1335202-59-9)
- Febuxostat Impurity 70 (CAS 1657014-33-9)
- Febuxostat Impurity 78 (CAS CATO-C4X-116278)
- Febuxostat t-Butyl Ether Acid Impurity (CAS 2418591-43-0)
- Febuxostat Impurity 110 (CAS 1346238-12-7)
- Febuxostat Impurity 59 (CAS 2073891-59-3)
Recommended Standards
- Efinaconazole Impurity 31 (CAS CATO-C4X-124331)
- 56599-84-9 Methyl octadecanoate-13C18 Methyl stearate-13C18 (CAS 56599-84-9)
- Safinamide Impurity 34 (CAS CATO-C4X-159034)
- tert-butyl N-(tert-butoxycarbonylamino)-N-(3-fluoro-1-bicyclo[1.1.1]pentanyl)carbamate (CAS 2538602-04-7)
- Lovastatin Impurity 21 (CAS CATO-C4X-168421)
- Ornidazole Impurity 63 (CAS 1452323-31-7)
- Famotidine Impurity 78 (CAS 88068-99-9)
- 3-amino-1-ethynyl-cyclobutanol;hydrochloride (CAS 2307738-76-5)
- [(5-methylfuran-2-yl)methyl](pentan-3-yl)amine (CAS 937664-07-8)
- Vonoprazan Impurity 304 (CAS 57331-00-7)
- 3-(4-Aminophenyl)-2-oxopropanoic acid hydrochloride (CAS 6296-41-9)
- 5-Bromo-4-chloro-2-(piperidin-1-yl)pyrimidine (CAS 62880-68-6)
- 1-(1,3-Dimethyl-1h-1,2,4-triazol-5-yl)-2,2-dimethylpropan-1-amine (CAS 1248109-93-4)
- Semaglutide impurity 78 (CAS CATO-C4X-222678)
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