(1-methylpropyl)-phosphoramidothioicacio-ethylo-(5-methyl-2-nitropheny h26905 hercules26905 kremart metacrefos n-(sec-butyl)-phosphoramidothioicacio-ethylo-(6-nitro-m-tolyl)ester o-ethylo-(3-methyl-6-nitrophenyl)n-sec-butylphosphorothioamidate o-ethyl-o-(5-methyl-2-nitrophenyl)(1-methylpropyl)phosphoramidothioate