Milbemycin A3: (6R,25R)-5-O-demethyl-28-deoxy-6,28-epoxy-25-methyl-milbemycin B
Milbemycin A4: (6R,25R)-5-O-demethyl-28-deoxy-6,28-epoxy-25-ethyl-milbemycin B
Description
Milbemectin is a mixture of milbemycin A3 (30%) and milbemycin A4 (70%) that has acaricidal and nematocidal activity against adult spider mites, spider mite eggs, and C. elegans with IC50 values of 5.3, 41.1, and 9.5 µg/mL, respectively.