25-Cyclohexyl-5-demethoxy-25-de(1-methylpropyl)-22,23-dihydro-5-oxo-avermectin A1a CAS 220119-16-4
| CAS No. | 220119-16-4 |
| Molecular Formula | C50H74O14 |
| Molecular Weight | 899.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 25-Cyclohexyl-5-demethoxy-25-de(1-methylpropyl)-22,23-dihydro-5-oxo-avermectin A1a is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
25-Cyclohexyl-5-demethoxy-25-de(1-methylpropyl)-22,23-dihydro-5-oxo-avermectin A1a (CAS 220119-16-4), molecular formula C50H74O14 and molecular weight 899.11 g/mol, is a CATO reference standard with documented purity and traceability.
25-Cyclohexyl-5-demethoxy-25-de(1-methylpropyl)-22,23-dihydro-5-oxo-avermectin A1a (C50H74O14) contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C50H74O14 |
| Molecular Weight | 899.11 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2019 |
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