Ezetimibe Impurity 93 CAS CATO-C4X-109893
| CAS No. | CATO-C4X-109893 |
| Molecular Formula | C20H20FNO4 |
| Molecular Weight | 357.38 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Ezetimibe Impurity 93.
CATO supplies Ezetimibe Impurity 93 (CAS CATO-C4X-109893), a pharmacopoeial impurity reference standard (molecular formula C20H20FNO4, MW 357.38 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Ezetimibe Impurity 93 (C20H20FNO4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 357.38 g/mol, it falls into the moderately-high-molecular-weight range. 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).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
As a certified reference material (CRM), Ezetimibe Impurity 93 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 | C20H20FNO4 |
| Molecular Weight | 357.38 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Related Ezetimibe Standards
- Ezetimibe Impurity 125 (CAS 439080-96-3)
- Ezetimibe Impurity 139 (CAS CATO-C4X-1098139)
- Ezetimibe Impurity 24 (CAS 528565-93-7)
- Ezetimibe Impurity 25 (CAS 404874-94-8)
- Ezetimibe Impurity 26 (CAS 1612153-32-8)
- Ezetimibe Impurity 42 (CAS 189028-95-3)
- Ezetimibe Impurity 36 (CAS 189028-93-1)
- Ezetimibe Impurity 38 (CAS 404874-93-7)
Recommended Standards
- Citalopram Impurity 75 (CAS CATO-C4X-110975)
- Citalopram impurity 79 (CAS CATO-C4X-110979)
- Ketotifen Impurity 26 (CAS CATO-C4X-204626)
- 7-ADCA Impurity 3 (CAS 26924-74-3)
- Lapatinib Impurity 42 (CAS CATO-C4X-119142)
- Bazedoxifene Acetate Impurity 7 (CAS 198480-21-6)
- Budesonide Impurity 81 (CAS CATO-C4X-138981)
- 4-bromo-5-methoxy-1H-indazole (CAS 1192004-62-8)
- Empagliflozin Impurity 13 (CAS CATO-C4X-106513)
- Germanium(III) nitride >=99.99% trace metals basis (CAS 12065-36-0)
- 1-((Difluoromethyl)sulfonyl)-4-methylbenzene (CAS 4837-17-6)
- Rocuronium Impurity 14 (CAS 1190105-60-2)
- 2-(2-Methoxy-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)acetonitrile (CAS 775351-55-8)
- Insulin Degludec Impurity 7 (CAS CATO-C4X-21577)
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com