Moxidectin EP Impurity L CAS 119718-45-5
| CAS No. | 119718-45-5 |
| Molecular Formula | C37H53NO8 |
| Molecular Weight | 639.82 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Moxidectin EP Impurity L (CAS 119718-45-5, C37H53NO8) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C37H53NO8, Moxidectin EP Impurity L 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 639.82 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
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 | C37H53NO8 |
| Molecular Weight | 639.82 g/mol |
| Purity | >90% |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 1 |
Related Moxidectin Standards
- Moxidectin EP Impurity D (CAS CATO-C4X-22751)
- Moxidectin EP Impurity E (CAS 2482741-71-7)
- Moxidectin (CAS 113507-06-5)
- Moxidectin-d3 (CAS 113507-06-5 (unlabelled))
- Moxidectin EP Impurity G (CAS CATO-C4X-227514)
- Moxidectin EP Impurity F (CAS CATO-C4X-227510)
- Moxidectin EP Impurity C (CAS 114041-23-5)
- Moxidectin EP Impurity B (CAS CATO-C4X-227520)
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