| abstract |
Naphthoquinone compounds of the formula In nwherein R 1 and R 2 are each, independently, selected from H and OH and R 3 nand R 4 are each, independently, selected from H, halo and 1-4C alkyl groups,nprovided that when R 1 and R 2 are each H, R 3 and R 4 cannot both be H, havenuse as pesticides particularly in the treatment of acarids and insects. n A pesticidal composition comprises at least one compound of the formulanI together with an inert carrier. |