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Substance Name: Aryldialkylphosphatase
RN: 117698-12-1


  • An enzyme which catalyzes the hydrolysis of an aryl-dialkyl phosphate to form dialkyl phosphate and an aryl alcohol. It can hydrolyze a broad spectrum of organophosphate substrates and a number of aromatic carboxylic acid esters. It may also mediate an enzymatic protection of LOW DENSITY LIPOPROTEINS against oxidative modification and the consequent series of events leading to ATHEROMA formation. The enzyme was previously regarded to be identical with Arylesterase (EC

Molecular Formula

  • Unspecified

Classification Codes

  • TSCA Flag PMN (a Commenced PMN (Premanufacture Notice) Substance)
  • TSCA Flag XU (Exempt from Reporting under Chemical Data Reporting Rule)
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Names and Synonyms

MeSH Heading

  • Aryldialkylphosphatase


  • Aryldiakylphosphatase
  • Chlorpyrifos oxonase
  • Diazoxonase
  • Esterase B1
  • Esterase E3
  • Esterase E4
  • Esterase, paraoxon
  • Esterase, pirimiphos-methyloxon
  • Homocysteine thiolactonase
  • Homocysteine thiolactone hydrolase
  • Isofenphos hydrolase
  • Methamidophos-degrading enzyme
  • Methylparathion hydrolase
  • OPA anhydrase
  • Organophosphorus acid anhydrase
  • Organophosphorus hydrolase
  • Paraoxon hydrolase
  • Paraoxonase
  • Paraoxonase 1

Systematic Names

  • Aryldialkylphosphatase
  • Esterase, organophosphate

Registry Numbers

CAS Registry Number

  • 117698-12-1

Other Registry Numbers

  • 114308-10-0
  • 126904-92-5
  • 137701-21-4
  • 66457-92-9
  • 78990-63-3

System Generated Number

  • 0117698121