Febuxostat Impurity 9 CAS 1330632-48-8
| CAS No. | 1330632-48-8 |
| Molecular Formula | C20H20N2O5S2 |
| Molecular Weight | 432.51 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Febuxostat Impurity 9 (CAS 1330632-48-8, C20H20N2O5S2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Febuxostat Impurity 9 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 432.51 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
As a certified reference material (CRM), Febuxostat Impurity 9 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 | C20H20N2O5S2 |
| Molecular Weight | 432.51 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Febuxostat Standards
- Febuxostat Impurity 17 (CAS 1330632-47-7)
- Febuxostat Impurity 31 (CAS CATO-C4X-116231)
- Febuxostat Impurity 8 (CAS 1346238-13-8)
- Febuxostat Impurity 74 (CAS 1312815-36-3)
- Febuxostat Impurity 64 (CAS 2375033-26-2)
- Febuxostat Acyl-beta-D-glucuronide (CAS 1351692-92-6)
- Febuxostat impurity 124 (CAS CATO-C4X-1162100)
- Febuxostat Impurity 72 (CAS 923942-36-3)
Recommended Standards
- Amoxicillin Impurity 27 (CAS 1978372-79-0)
- N-Nitroso Terbutaline impurity 132 (CAS CATO-C4X-1183132)
- Amoxicillin impurity 114 (CAS CATO-C4X-1148114)
- Desonide Impurity 10 (CAS CATO-C4X-130110)
- Carteolol Impurity 34 (CAS CATO-C4X-228734)
- Baricitinib Impurity 132 (CAS CATO-C4X-2260132)
- Amoxicillin Impurity 49 (CAS 57591-61-4)
- 5-(3-Chloro-4-methoxyphenyl)-N-(3-methoxyphenyl)furan-2-carboxamide (CAS 853333-12-7)
- 1-(Cyclobutylmethyl)-1H-imidazole-2-carboxylic acid (CAS 1439896-41-9)
- Serotonin Impurity N2 (CAS 1134-01-6)
- 2-Amino-5-(4-methoxyphenyl)pentanoic acid (CAS 754128-54-6)
- 1,3-Dimethoxy-5-(2-nitro-1-propen-1-yl)benzene (CAS 18917-76-5)
- 3-(2-Chlorophenyl)-6-(4-methylbenzyl)-[1,2,4]triazolo[4,3-a]pyridine (CAS 745827-04-7)
- Peptide Impurity 82 (CAS 10491-78-8)
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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