Febuxostat Impurity 2 CAS CATO-C4X-11622
| CAS No. | CATO-C4X-11622 |
| Molecular Formula | C14H13NO4S |
| Molecular Weight | 291.32 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 2 (CAS CATO-C4X-11622), a pharmacopoeial impurity reference standard (molecular formula C14H13NO4S, MW 291.32 g/mol) used for the identification and quantification of trace impurities in APIs.
Febuxostat Impurity 2 (C14H13NO4S) contains a nitrogen-containing heterocyclic scaffold, 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).
CATO manufactures Febuxostat Impurity 2 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C14H13NO4S |
| Molecular Weight | 291.32 g/mol |
| Purity | 97%+ |
| 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; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Febuxostat Standards
- Febuxostat impurity 129 (CAS CATO-C4X-1162105)
- Febuxostat Impurity 69 (CAS 161798-01-2)
- Febuxostat Impurity 49 (CAS 1206550-99-3)
- Febuxostat Impurity 56 (CAS CATO-C4X-116256)
- Febuxostat Impurity 51 (CAS CATO-C4X-116251)
- Febuxostat Impurity 57 (CAS CATO-C4X-116257)
- Febuxostat Impurity 97 (CAS CATO-C4X-116297)
- Febuxostat Impurity 26 (CAS 1886961-39-2)
Recommended Standards
- Pitavastatin Impurity 91 (CAS CATO-C4X-103791)
- Levofloxacin impurity 90 (CAS CATO-C4X-137190)
- Pitavastatin Impurity 25 (CAS CATO-C4X-103725)
- Belinostat Impurity 1 (CAS CATO-C4X-34901)
- Loxoprofen impurity 101 (CAS CATO-C4X-1488101)
- Perospirone Impurity 26 (CAS CATO-C4X-245826)
- Mebeverine EP Impurity E (CAS 69788-75-6)
- 2-Valerylpyridine (CAS 7137-97-5)
- 4-Methyl-1,3,4,5-tetrahydro-2H-1,5-benzodiazepin-2-one (CAS 3967-01-9)
- 1H-pyrazole-3-sulfonamide (CAS 1797158-84-9)
- 2-(3-Bromo-2-fluorophenyl)-6-methyl-1,3,6,2-dioxazaborocane-4,8-dione (CAS 1257647-82-7)
- CAS 287389-39-3 (CAS 287389-39-3)
- 3-(3-(Benzyloxy)propoxy)-2-bromobenzaldehyde (CAS 1093644-28-0)
- Semaglutide Impurity 129 (CAS 2490269-79-7)
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