|Cas No:||71751-41-2||Ec No:||200-096-6|
|Name:||Avermectin||Synonyms:||Abamectin 100mg [71751-41-2];AbaMectin (AverMectin B1)(FDA);Purity Of AbaMectin;AverMectin B1a-AverMectin B1b Mixt.;|
|Molecular Formula:||C49H74O14||Molecular Weight:||887.11|
|Melting Point:||150-155°C||Boiling Point:||717.52°C|
abamectin cas no,
71751-41-2 Avermectin B1
|Synonyms||Abamectin 100mg [71751-41-2];AbaMectin (AverMectin B1)(FDA);Purity of AbaMectin;AverMectin B1a-AverMectin B1b Mixt|
|CAS Registry Number||71751-41-2|
Abamectin was first developed by satoshi omura et al., kitasato university in Japan and Merck company in the United States as a class of 16-element macrolide compounds with insecticidal, acaricidal and nematoidal activities, produced by the fermentation of Streptomycesavermitilis in Streptomyces. There are 8 components in natural avermectin, mainly 4 of which are A1a, A2a, B1a and B2Chemicalbooka, with a total content ≥80%. The four corresponding homologues with smaller proportions are A1b, A2b, B1b and B2b, with a total content of less than 20%. At present, abamectin is used as the main insecticidal ingredient (AvermectinB1a+B1b, where B1a is not less than 90% and B1b is not more than 5%), and the content of B1a is calibrated.
Florfenicol is synthesised from thiamphenicol by replacing the 3-hydroxy group with fluorine, first synthesised at Schering in 1980. By replacing the hydroxy group, it was rationalised that chloramphenicol resistance via chloramphenicol acetyltransferase could be eliminated. Florfenicol is a broad spectrum antibiotic with good activity against Gram negative and anaerobic bacteria. Florfenicol acts by binding to the 23S sub-unit of the 50S ribosome, inhibiting protein synthesis. Florfenicol has been extensively studied with over 400 literature citations.