Febuxostat impurity 91 CAS 1380049-42-2
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 1380049-42-2 |
| Molecular Formula | C18H22N2O3S |
| Molecular Weight | 346.44 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Febuxostat impurity 91 (CAS 1380049-42-2) is a high-purity pharmacopoeial impurity standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C18H22N2O3S. Molecular weight: 346.44 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C18H22N2O3S |
| Molecular Weight | 346.44 g/mol |
| Purity | >95% |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Febuxostat Standards
- Febuxostat Impurity 99 (CAS CATO-C4X-116299)
- Febuxostat Impurity 43 (CAS 161798-03-4)
- Febuxostat Impurity 60 (CAS 2230270-03-6)
- Febuxostat Impurity 81 (CAS 2375033-31-9)
- Febuxostat Impurity 89 (CAS CATO-C4X-116289)
- Febuxostat Impurity 13 (CAS 160844-75-7)
- Febuxostat Impurity 53 (CAS 2230270-05-8)
- Febuxostat Impurity 54 (CAS 2375033-35-3)
Recommended Standards
- Tris(2,4-dimethylphenyl)phosphine (CAS 49676-42-8)
- Tamsulosin Impurity 43 (CAS CATO-C4X-118743)
- tert-butyl N-(4-amino-5-fluoro-2-methyl-phenyl)-N-tert-butoxycarbonyl-carbamate (CAS 2665662-72-4)
- Doxorubicin Impurity 10 (CAS CATO-C4X-203310)
- Loperamide impurity 15 (CAS 37743-18-3)
- 4-Amino-3-((4-chlorophenyl)amino)-6-methyl-1,2,4-triazin-5(4H)-one (CAS 22285-10-5)
- 5-Acetamido-2-aminobenzenesulfonic acid (CAS 96-78-6)
- Decitabine Di-Toluoyl Impurity (CAS 10302-79-1)
- 3-(Trifluoromethyl)-5H-cyclopenta[c]pyridin-7(6H)-one (CAS 2734923-98-7)
- Valosin Peptide (VQY), porcine (CAS 99510-37-9)
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 13829788188 / jacky.chen@cato-chem.com