NCIt definition : Acts on organophosphorus compounds (such as paraoxon) including esters of phosphonic
and phosphinic acids. Inhibited by chelating agents; requires divalent cations for
activity. Previously regarded as identical with EC 3.1.1.2 Arylesterase [EC 3.1.8.1
created 1989] (from IUBMB Enzyme Nomenclature).;