Difelikefalin Impurity 103 CAS CATO-C4X-3041103
| CAS No. | CATO-C4X-3041103 |
| Molecular Formula | C25H33N3O4 |
| Molecular Weight | 439.55 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C25H33N3O4, Difelikefalin Impurity 103 contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 439.55 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).
Difelikefalin Impurity 103 (CAS CATO-C4X-3041103) is a certified pharmaceutical impurity reference standard with the molecular formula C25H33N3O4 and a molecular weight of 439.55 g/mol.
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.
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 | C25H33N3O4 |
| Molecular Weight | 439.55 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
Related Difelikefalin Standards
- Difelikefalin Impurity 105 (CAS CATO-C4X-3041105)
- Difelikefalin Impurity 104 (CAS CATO-C4X-3041104)
- Difelikefalin Impurity 44 (CAS 957006-52-9)
- Difelikefalin Impurity 91 (CAS CATO-C4X-304191)
- Difelikefalin Impurity 15 (CAS 368866-07-3)
- Difelikefalin Impurity 2 (CAS 1281870-46-9)
- Difelikefalin Impurity 3 (CAS 956977-18-7)
- Difelikefalin Impurity 4 (CAS 1173664-52-2)
Recommended Standards
- Vildagliptin Impurity 2 (CAS 1036959-23-5)
- Vildagliptin Impurity 112 (CAS CATO-C4X-1100112)
- 3-(3-(2-(1-(1-Methylpiperidin-4-yl)-1H-pyrazol-4-yl)-7H-pyrrolo[2,3-d]pyrimidin-5-yl)phenyl)pentanenitrile (CAS 1956336-08-5)
- Carfilzomib Impurity 80 (CAS 1545468-80-1)
- Xylometazoline EP Impurity E Monohydrate (CAS 6192-52-5)
- Perindopril EP Impurity N Tert-Butylamine Salt (CAS CATO-C4X-125274)
- Policresulen Impurity 19 Sodium Salt (CAS 41481-17-8 (free acid))
- N-((2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)methyl)ethanamine hydrochloride (CAS 1052543-02-8)
- Ethyl 3-(tert-butyl)-1-(2-hydroxyethyl)-1H-pyrazole-5-carboxylate (CAS 948551-25-5)
- 1-[5-(3-Chlorophenyl)isoxazol-3-yl]ethanol (CAS 657427-36-6)
- 2-(Cyclopropylmethoxy)-3-nitropyridine (CAS 1881320-64-4)
- 2-Amino-1-(3-((benzyl(methyl)amino)methyl)piperidin-1-yl)ethanone (CAS 1353972-82-3)
- N-(2,2-Dimethoxyethyl)-6-hydroxy-4-oxo-1,2-dihydro-4H-pyrrolo[3,2,1-ij]quinoline-5-carboxamide (CAS 477859-90-8)
- Semaglutide impurity 71 (CAS CATO-C4X-222671)
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