| abstract |
New fermentation products A83543L, A83543M, and A83543N, N-demethyl derivatives thereof, and salts thereof, are useful for the control of insects. A83543PsaL1 is useful for the preparation of A83543 components. Methods for making A83543J, A83543L, A83543M, and A83543N by culture of Saccharopolyspora spinosa NRRL 18719 or NRRL 18720 are provided. Insecticidal and ectoparasiticidal compositions containing A83543L, A83543M, A83543N, and N-demethyl derivatives thereof are also provided. |