Origin:It is a semi-synthesized product of fermented Avermectin B1.
Chemical name: 4"-epi-4"-deoxy-acetylaminoavermectin B1
Formula and molecular weight: B1a C5OH75NO14=913 B1b C49H73NO14=899
Assay: Based on drying, it contains of B1 not less than 90%.
Character: The product is white or light yellow crystalline powder.
Its melting point is 161-166°C.The product is soluble in methanol, ethanol and ethyl acetate, not soluble in water.
Usage: It is not only a broad spectrum and the most efficacious antiparasite drug of Averrmectin kind, but also one of this kind of drugs with the lowest distribution coefficients in milk. Tests show that the product, administered as 0.2mg/kg body weight, can effectively prevent and treat internal and external parasites of cattle and sheep. After administered to lactating cattle, the concentration ratio in milk to in plasma is less than 0.2. The residue amount of the drug in milk is low, so it does not need withdrawal period when administered to lactating cow; the residue amount in muscle is low, so there is also no withdrawal period in beef cattle.
Storage: Keep closed and store away from light in a cool and dry place.