Moxidectin impurity 18 CAS 1402163-94-3
| CAS No. | 1402163-94-3 |
| Molecular Formula | C37H53NO9 |
| Molecular Weight | 655.82 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Moxidectin impurity 18 (CAS 1402163-94-3), a pharmacopoeial impurity reference standard (molecular formula C37H53NO9, MW 655.82 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Moxidectin impurity 18 is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 655.82 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), Moxidectin impurity 18 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 | C37H53NO9 |
| Molecular Weight | 655.82 g/mol |
| Purity | 97%+ |
| 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 F (CAS CATO-C4X-227510)
- Moxidectin-d3 (CAS 113507-06-5 (unlabelled))
- Moxidectin EP Impurity D (CAS CATO-C4X-22751)
- Moxidectin EP Impurity L (CAS 119718-45-5)
- Moxidectin EP Impurity E (CAS 2482741-71-7)
- Moxidectin (CAS 113507-06-5)
- Moxidectin EP Impurity I (CAS 113463-31-3)
- Moxidectin EP Impurity G (CAS CATO-C4X-227514)
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