Common name: Eprinomectin  
(Notes: There is no ISO common name for this substance; the name 'eprinomectin' is approved by the World Health Organization.)

Chemical name:4"-epi-4"-deoxy-acetylaminoavermectin B1 Formula and molecular weight

Formula and molecular weight: C₂₀H₁₀Cl₂F₅N₃O₃   506.21

B1a   C₄₈H₇₂O₁₃ C₂H₄NO  914
B1b   C₄₇H₇₀O₁₃ C₂H₄NO  900

Origin: It is a semi-synthesized product of fermented Avermectin B1.

Content:

    Purity of B1 is not less than 90% in dry product.

Appearance:

    White or light yellow crystalline powder

Melting point:

     163.3-165.7°C

Solubility :

    The product is easily soluble in ethanol, methanol, ethyl acetate and the like, not soluble in water.

Use:

    It is not only a broad spectrum and the most efficacious pesticide of Avermectin kind, but also one of the lowest distribution coefficient of this kind in milk. Trials show that the product with the concentration of 0.1mg/kg or 0.05mg/kg can efficaciously prevent seven kinds of nematodes parasitic on large intestine, small intestine and stomach of cattle and sheep, the efficacy is shown as at least 97%. When it is used to cow in milk, concentration ratio in milk to in plasma is not more than 0.2. It has the advantage over other drugs against nematodes parasitic on cow during milking.