Febuxostat Impurity 90 CAS CATO-C4X-116290
| CAS No. | CATO-C4X-116290 |
| Molecular Formula | C16H18N2O4S |
| Molecular Weight | 334.39 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Febuxostat Impurity 90 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.
Febuxostat Impurity 90 (CAS CATO-C4X-116290) is a certified pharmaceutical impurity reference standard with the molecular formula C16H18N2O4S and a molecular weight of 334.39 g/mol.
Based on its molecular formula C16H18N2O4S, Febuxostat Impurity 90 contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 334.39 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
Physical & Chemical Properties
| Molecular Formula | C16H18N2O4S |
| Molecular Weight | 334.39 g/mol |
| Purity | 97%+ |
| 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 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Febuxostat Standards
- Febuxostat Impurity 10 (CAS 1239233-86-3)
- Febuxostat impurity 126 (CAS CATO-C4X-1162102)
- Febuxostat Impurity 14 (CAS 1350352-70-3)
- Febuxostat Impurity 96 (CAS CATO-C4X-116296)
- Febuxostat Impurity 6 (CAS 1239233-87-4)
- Febuxostat Impurity 85 (CAS CATO-C4X-116285)
- Febuxostat Impurity 94 (CAS CATO-C4X-116294)
- Febuxostat 67M-2 (CAS 407582-47-2)
Recommended Standards
- Cefotaxime Impurity 44 (CAS 47288-83-5)
- Flurbiprofen Impurity 142 (CAS CATO-C4X-1444142)
- 5726-48-7 5862AE C16H18N2O4S Ethyl 2-amino-5-{[(4-methoxyphenyl)amino]-carbonyl}-4-methylthiophene-3-carboxylate (CAS 5726-48-7)
- Oseltamivir Impurity 135 (CAS CATO-C4X-1720135)
- Salbutamol EP Impurity M(Formic Acid) (CAS CATO-C4X-117631)
- Apalutamide Impurity 59 (CAS CATO-C4X-274959)
- Bumetanide Impurity 105 (CAS CATO-C4X-1986105)
- Thiochroman-4-amine hydrochloride (CAS 15857-70-2)
- 2-(Aminomethyl)-4-(difluoromethyl)-5-(trifluoromethyl)pyridine-3-carbonyl chloride (CAS 1361702-17-1)
- 4-(3,4-Dichlorobenzoyl)-8-methyl-1-oxa-4,8-diazaspiro[4.5]decane-3-carboxylic acid (CAS 1326810-30-3)
- (3-Fluorophenyl)(4-fluorophenyl)methanol (CAS 190444-04-3)
- 4-(4-Bromophenethyl)morpholine (CAS 736991-39-2)
- 3-(Pentyloxy)azetidine (CAS 1220021-55-5)
- Des-Ala18-Tirzepatide (CAS CATO-CPTD788955)
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