Ivermectin impurity 19 CAS CATO-C4X-198219
| CAS No. | CATO-C4X-198219 |
| Molecular Formula | C48H74O15 |
| Molecular Weight | 891.09 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system, Ivermectin impurity 19 is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 891.09 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).
Ivermectin impurity 19 (CAS CATO-C4X-198219) is a certified pharmaceutical impurity reference standard with the molecular formula C48H74O15 and a molecular weight of 891.09 g/mol.
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.
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 | C48H74O15 |
| Molecular Weight | 891.09 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 |
Related Ivermectin Standards
- Ivermectin EP Impurity C (CAS 65195-57-5)
- Ivermectin EP Impurity E (CAS CATO-C4X-198214)
- 24-Ethyl Ivermectin (CAS CATO-C4X-198217)
- Ivermectin EP Impurity D (CAS 102190-55-6)
- Ivermectin impurity 21 (CAS CATO-C4X-198221)
- Ivermectin EP Impurity K (CAS 74567-01-4)
- Ivermectin EP Impurity F (CAS CATO-C4X-198213)
- Ivermectin EP Impurity I(Mixture of Diastereomers) (CAS 1135339-49-9)
Recommended Standards
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