Difelikefalin Impurity 3 CAS 956977-18-7
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 956977-18-7 |
| Molecular Formula | C21H31N3O4 |
| Molecular Weight | 389.49 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Difelikefalin Impurity 3 (CAS 956977-18-7) is a high-purity pharmacopoeial impurity standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C21H31N3O4. Molecular weight: 389.49 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C21H31N3O4 |
| Molecular Weight | 389.49 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 3 |
Related Difelikefalin Standards
- Difelikefalin Impurity 2 (CAS 1281870-46-9)
- Difelikefalin Impurity 4 (CAS 1173664-52-2)
- Difelikefalin Impurity 29 (CAS CATO-C4X-304129)
- Difelikefalin Impurity 1 (CAS 956242-62-9)
- Difelikefalin Impurity 95 (CAS CATO-C4X-304195)
- Difelikefalin Impurity 7 (CAS 956233-15-1)
- Difelikefalin Impurity 91 (CAS CATO-C4X-304191)
- Difelikefalin Impurity 44 (CAS 957006-52-9)
Recommended Standards
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- Tedizolid Impurity 50 (CAS 1056039-83-8)
- Dapagliflozin Impurity 208 (CAS CATO-C4X-1138208)
- N-(2-chlorophenyl)-1-(2,5-dichlorophenyl)-5-methyl-1H-1,2,4-triazole-3-carboxamide (CAS 338407-95-7)
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- 2-Chloroisonicotinimidohydrazide (CAS 1092352-90-3)
- 7-Fluoro-2-methyl-1,2,3,4-tetrahydroisoquinolin-3-one (CAS 1199813-81-4)
- D-Ala28-Tirzepatide (CAS CATO-CPTD788906)
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 13829788188 / jacky.chen@cato-chem.com