compounds of formula : ## str1 ## where r is alkyl having from 1 to 8 carbon atoms , alkenyl having from 3 to 8 carbon atoms or cyclohexyl ; r 1 is alkyl having from 1 to 8 carbon atoms , alkenyl having from 3 to 8 carbon atoms or cyclohexyl ; and r and r 1 together can form a ---- n group wherein n is an integer from 4 to 6 . these compounds can be used as phytotoxicity antidotes for thiolcarbamate and / or acetanilide herbicides for use on corn cultivations .