| abstract |
New A83543 components, including fermentation products A83543Q, A83543R, A83543S and A83543T and N-demethyl derivatives, and salts thereof, are useful for the control of insects and mites. The pseudoaglycones are useful for the preparation of A83543 components. Methods for making the new A83543 components by culture of Saccharopolyspora spinosa NRRL 18823 are provided. Insecticidal and ectoparasiticidal compositions containing new A83543 components are also provided. |