Fexofenadine Impurity 46 CAS CATO-C4X-179446
| CAS No. | CATO-C4X-179446 |
| Molecular Formula | C38H51NO7 |
| Molecular Weight | 633.81 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Fexofenadine Impurity 46 (CAS CATO-C4X-179446), a pharmacopoeial impurity reference standard (molecular formula C38H51NO7, MW 633.81 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C38H51NO7, Fexofenadine Impurity 46 contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 633.81 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C38H51NO7 |
| Molecular Weight | 633.81 g/mol |
| Purity | >95% |
| Storage | Store at room temperature, 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 |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Fexofenadine Standards
- Fexofenadine Impurity 36 (CAS CATO-C4X-179436)
- Fexofenadine Impurity 37 (CAS CATO-C4X-179437)
- Fexofenadine Impurity 38 (CAS CATO-C4X-179438)
- Fexofenadine Impurity 32 (CAS CATO-C4X-179432)
- Fexofenadine Impurity 33 (CAS CATO-C4X-179433)
- Fexofenadine Impurity 34 (CAS CATO-C4X-179434)
- Fexofenadine Impurity 35 (CAS CATO-C4X-179435)
- Fexofenadine Impurity 24 (CAS 908595-88-0)
Recommended Standards
- (S,R,S)-AHPC-Me-CO-CH2-PEG3-NH2 (CAS 2409538-69-6)
- Propafenone Dimer Impurity-d10 (CAS 1346602-27-4)
- Fmoc-L-Cys(Msbh)-OH (CAS 1584646-97-8)
- AgCl(N,N-bis-(diphenylphosphanylmethyl)-2-aminopyridine) (CAS 1428979-59-2)
- Oxymetazoline EP Impurity D (CAS 55699-12-2)
- Piperacillin impurity 106 (CAS CATO-C4X-1732106)
- Calcium Dobesilate Impurity N1 (CAS 6409-58-1)
- Olopatadine Impurity 12 (CAS 66801-40-9)
- rel-(3aR,5r,6aS)-5-methyl-2,3,3a,4,6,6a-hexahydro-1H-cyclopenta[c]pyrrol-5-ol;hydrochloride (CAS 2567756-11-8)
- 3-[5-(oxolan-3-yl)-1,2,4-oxadiazol-3-yl]aniline (CAS 1244030-98-5)
- 4-Chloro-N-(2,3-dimethylphenyl)benzamide (CAS 127292-02-8)
- (R)-6-bromo-3,3-dimethyl-2,3-dihydro-1H-inden-1-ol (CAS 1568056-64-3)
- Methyl 3-bromo-4-cyano-5-fluorobenzoate (CAS 1805523-73-2)
- Tirzepatide Impurity 46 (CAS CATO-C4X-324046)
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