Febuxostat Impurity 40 CAS CATO-C4X-116240
| CAS No. | CATO-C4X-116240 |
| Molecular Formula | C12H15NO4 |
| Molecular Weight | 237.25 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.
Febuxostat Impurity 40 (CAS CATO-C4X-116240) is a certified pharmaceutical impurity reference standard with the molecular formula C12H15NO4 and a molecular weight of 237.25 g/mol.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, Febuxostat Impurity 40 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 237.25 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).
As a certified reference material (CRM), Febuxostat Impurity 40 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 | C12H15NO4 |
| Molecular Weight | 237.25 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Febuxostat Standards
- Febuxostat Impurity 33 (CAS 100118-38-5)
- Febuxostat Impurity 01 (CAS 886501-78-6)
- Febuxostat impurity 128 (CAS CATO-C4X-1162104)
- Febuxostat impound 107 (CAS 2227293-69-6)
- Febuxostat impurity 108 (CAS 1267681-15-1)
- Febuxostat Impurity 38 (CAS 528607-60-5)
- Febuxostat Impurity 39 (CAS 161718-85-0)
- Febuxostat Impurity 21 (CAS 407582-48-3)
Recommended Standards
- Neratinib Impurity 41 (CAS 1201080-20-7)
- Acetaminophen Impurity 40 (CAS 483303-97-5)
- Ivabradine Impurity 102 (CAS CATO-C4X-1119102)
- Metoclopramide Impurity 119 (CAS CATO-C4X-1415119)
- Entacapone impurity 47 (CAS 1402714-31-1)
- Tofacitinib Impurity 221 (CAS CATO-C4X-1079221)
- Clarithromycin EP Impurity F (CAS 128940-83-0)
- Amisulpride Impurity 41 (CAS 2230058-95-2)
- 3-Amino-4-methylbenzyl alcohol (CAS 81863-45-8)
- 2-(4-Chlorobenzyl)quinuclidin-3-one (CAS 112628-51-0)
- 3-(5-((Dimethylamino)methyl)-1H-tetrazol-1-yl)benzoic acid (CAS 876708-58-6)
- 3-(5-Methyl-2-oxobenzo[d]oxazol-3(2h)-yl)propanoic acid (CAS 71977-76-9)
- 1,2,3,6-Tetrahydro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (CAS 375853-82-0)
- Neuropeptide Y (porcine) trifluoroacetate salt (CAS 83589-17-7)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com