Difelikefalin Impurity 59 CAS 1821319-30-5
| CAS No. | 1821319-30-5 |
| Molecular Formula | C37H55N7O6 |
| Molecular Weight | 693.88 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
As a process- or degradation-related impurity, Difelikefalin Impurity 59 (CAS 1821319-30-5, C37H55N7O6) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Difelikefalin Impurity 59 is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 693.88 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
As a certified reference material (CRM), Difelikefalin Impurity 59 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 | C37H55N7O6 |
| Molecular Weight | 693.88 g/mol |
| Purity | 95% |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Nitrogen Atoms | 7 |
Related Difelikefalin Standards
- Difelikefalin Impurity 10 (CAS 2756592-19-3)
- Difelikefalin Impurity 5 (CAS 1024828-78-1)
- Difelikefalin Impurity 58 (CAS CATO-C4X-304158)
- Difelikefalin Impurity 47 (CAS CATO-C4X-304147)
- Difelikefalin Impurity 84 (CAS CATO-C4X-304184)
- Difelikefalin (CAS 1024828-77-0)
- Difelikefalin Preparation and Separation of Impurity 91 (CAS CATO-C3D-263091)
- Difelikefalin Impurity 14 (CAS 2742623-84-1)
Recommended Standards
- tert-Butyl (3R,4S,5S)-4-[(S)-2-[(S)-2-[Fmoc(methyl)amino]-3-methylbutanamido]-N,3-dimethylbutanamido]-3-methoxy-5-methylheptanoate (CAS 474645-25-5)
- Gadoteridol impurity 31 (CAS CATO-C4X-225731)
- Quin II (potassium) (CAS 73630-23-6)
- Jiangyao Toxin G Solution (CAS 1312711-74-2)
- Oseltamivir impurity 204 (CAS CATO-C4X-1720204)
- Cefpodoxime Proxetil Impurity 27 (CAS CATO-C4X-157927)
- Clascoterone Impurity 12 (CAS 2693-85-8)
- (2R,2'R)-N1,N1'-(ethane-1,2-diyl)bis(propane-1,2-diamine) (CAS 154823-38-8)
- (4-Fluoro-benzyl)-furan-2-ylmethyl-aminehydrochloride (CAS 1158318-80-9)
- (S)-1-(2-(Chloromethyl)pyrrolidin-1-yl)ethanone (CAS 66158-70-1)
- 2-(3-Benzyl-2,5-dioxopyrrolidin-1-yl)acetic acid (CAS 332849-43-1)
- Pcb No. 54 (CAS 15968-05-5)
- (3E)-3-[(4-Chlorophenyl)imino]-1-[(4-chlorophenyl)methyl]-2,3-dihydro-1H-indol-2-one (CAS 478031-79-7)
- D-Ile12-Tirzepatide (CAS CATO-CPTD788921)
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