Febuxostat Impurity 79 CAS 25984-63-8
| CAS No. | 25984-63-8 |
| Molecular Formula | C7H7NOS |
| Molecular Weight | 153.20 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Febuxostat Impurity 79 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.
As a process- or degradation-related impurity, Febuxostat Impurity 79 (CAS 25984-63-8, C7H7NOS) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C7H7NOS, Febuxostat Impurity 79 contains an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 153.20 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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.
Physical & Chemical Properties
| Molecular Formula | C7H7NOS |
| Molecular Weight | 153.20 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1964 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Febuxostat Standards
- Febuxostat Impurity 5 (CAS 7133-90-6)
- Febuxostat Impurity N3 (CAS 104317-54-6)
- Febuxostat Impurity 35 (CAS 34133-58-9)
- Febuxostat Impurity 50 (CAS 609-15-4)
- Febuxostat Impurity 44 (CAS 79836-78-5)
- Febuxostat Impurity 34 (CAS 18962-07-7)
- Febuxostat impurity 37 (CAS 1229019-33-3)
- Febuxostat Impurity 75 (CAS 138330-01-5)
Recommended Standards
- Ticlopidine EP Impurity B (CAS 68559-60-4)
- Taurine Ethyl Ester (CAS 78723-71-4)
- Dotinurad Impurity 86 (CAS CATO-C4X-249486)
- 2-Sulfanylbenzamide (CAS 5697-20-1)
- Thioctic acid impurity 56 (CAS CATO-C4X-152656)
- Imrecoxib Impurity 60 (CAS CATO-C4X-237960)
- Ilaprazole Impurity 31 Hydrochloride (CAS CATO-C4X-1130174)
- 2-(4-(Diethylamino)phenyl)acetonitrile (CAS 806605-05-0)
- 5-Bromo-N-(3-fluoro-4-methoxyphenyl)furan-2-carboxamide (CAS 1252378-44-1)
- Methyl 2-(2-hydroxy-5-iodophenyl)acetate (CAS 403499-92-3)
- 1,3-Benzenedicarboxylic acid, polymer with 1,2,3-propanetriol and 1,3,5-trimethoxy-1,5-dimethyl-1,3,5-triphenyltrisiloxane, (9Z,12Z,15Z)-9,12,15-octadecatrienoate (CAS 69029-30-7)
- 1,8-difluoronaphthalen-2-ol (CAS 767320-15-0)
- Intermediate Impurity 12 (CAS 69444-51-5)
- Semaglutide impurity 24 (CAS CATO-C4X-222624)
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