“…This persistence frequently posed hazards to species that were fed such foods or were in contact with these pesticides [5,6]. Recently, much attention has been paid to the effect of the alkyl substituents on the nitrogen atom of phosphoramidates [12,13], phosphoramidothionates [13][14][15][16], and phosphoramidothiolates [13,14]. Extensive work has been performed in this area to study the effect of substituted phenyl phosphates [7][8][9], phosphorothiolates [10], phosphonates, hosphonothioates, phosphinates, and phosphinothioates [11] on their insecticidal activity.…”