Difelikefalin Impurity 12 CAS 2219351-45-6
| CAS No. | 2219351-45-6 |
| Molecular Formula | C39H60N8O6 |
| Molecular Weight | 736.94 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 736.94 g/mol gives Difelikefalin Impurity 12 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Difelikefalin Impurity 12 (CAS 2219351-45-6) is a certified pharmaceutical impurity reference standard with the molecular formula C39H60N8O6 and a molecular weight of 736.94 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Difelikefalin Impurity 12 is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 736.94 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 certified reference material (CRM), Difelikefalin Impurity 12 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 | C39H60N8O6 |
| Molecular Weight | 736.94 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.) | 1998 |
| Nitrogen Atoms | 8 |
Related Difelikefalin Standards
- Difelikefalin Impurity 16 (CAS CATO-C4X-304116)
- Difelikefalin Impurity 98 (CAS CATO-C4X-304198)
- Difelikefalin Impurity 99 (CAS CATO-C4X-304199)
- Difelikefalin Impurity 11 (CAS 2219351-44-5)
- Difelikefalin Impurity 13 (CAS 2219351-61-6)
- Difelikefalin Impurity 9 (CAS 1024828-90-7)
- Difelikefalin Impurity 19 (CAS CATO-C4X-304119)
- Difelikefalin Impurity 73 (CAS CATO-C4X-304173)
Recommended Standards
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- Methyl 3-formamido-4-hydroxybenzoate (CAS 1379261-17-2)
- 3’-O-Desmethyl Etoposide (CAS 100007-54-3)
- 1-Methyl-5-oxo-2-phenylpyrrolidine-3-carboxylic acid (CAS 72704-31-5)
- 4-Amino-3-(o-tolyl)isothiazole-5-carboxylic acid (CAS 1492547-55-3)
- pyrimidine-4,5-diamine hydrochloride (CAS 97846-32-7)
- Semaglutide impurity 84 (CAS CATO-C4X-222684)
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