Aryldialkylphosphatase
Organophosphate is the general name for esters of phosphoric acid and is one of the organophosphorus compounds. They can be found as part of insecticides, herbicides, and nerve gases, amongst others. Some less-toxic organophosphates can be used as solvents, plasticizers, and EP additives. The use of organophosphates accounts for approximately 38% of all pesticide use globally.
Phosphite ester
In chemistry a phosphite ester or organophosphite usually refers to an organophosphorous compound with the formula P(OR). They can be considered as esters of an unobserved tautomer phosphorous acid, HPO, with the simplest example being trimethylphosphite, P(OCH). Some phosphites can be considered esters of the dominant tautomer of phosphorous acid (HP(O)(OH)). The simplest representative is dimethylphosphite with the formula HP(O)(OCH). Both classes of phosphites are usually colorless liquids.