Pyrazophos structural formula

CAS Number13457-18-6
Molecular FormulaC14H20N3O5PS
Molecular Weight373.360
  • Pyrazophos
  • Ethyl 2-[(diethoxyphosphorothioyl)oxy]-5-methylpyrazolo[1,5-a]pyrimidine-6-carboxylate
  • Pyrazolo[1,5-a]pyrimidine-6-carboxylic acid, 2-[(diethoxyphosphinothioyl)oxy]-5-methyl-, ethyl ester
  • 13457-18-6
  • BRN 0577209
  • Caswell No. 714D
  • Curamil
  • O,O-Diethyl-O-(5-methyl-6-ethoxy-carbonyl-pyrazolo(1.5-a)pyrimid-2-yl)-thionophosphate
  • 2-(O,O-Diethyl-thionophosphoryl)-5-methyl-6-carbethoxy-pyrazolo-(1,5a)pyrimidine
  • EINECS 236-656-1
  • EPA Pesticide Chemical Code 447500
  • O-6-Ethoxycarbonyl-5-methylpyrazolo(1,5-a)pyrimidin-2-yl O,O-diethyl phosphorothioate
  • Ethyl 2-diethoxythiophosphoryloxy-5-methylpyrazolo(1,5-a)pyrimidine-6-carboxylate
  • Hoechst 2873
  • Missile
  • NSC 232671
  • Pyrazolo-(1,5a)pyrimidine, 2-(O,O-diethyl-thionophosphoryl)-5-methyl-6-ethoxycarbonyl-
  • O,O-Diethyl O-(5-methyl-6-(ethoxycarbonyl)-pyrazolo-(1,5-a)-pyrimid-2-yl)-thionophosphate
  • 2-(O,O-Diethylthionophosphoryl)-5-methyl-6-carbethoxy-pyrazolo-(1,5a)pyrimidine
  • Ethyl 2-((diethoxyphosphinothioyl)oxy)-5-methylpyrazolo(1,5-a)pyrimidine-6-carboxylate
  • O,O-Diethyl O-(5-methyl-6-(ethoxycarbonyl)-pyrazolo-(1,5-a)-pyrimid-2-yl)-thionophosphate
  • O-6-ethoxycarbonyl-5-methylpyrazolo[1,5-a]pyrimidin-2-yl O,O-diethyl phosphorothioate


Separation of Pyrazophos on Newcrom R1 HPLC column

Separation of Pyrazophos on Newcrom R1 HPLC column

Pyrazophos can be analyzed by this reverse phase (RP) HPLC method with simple conditions. The mobile phase contains an acetonitrile (MeCN), water, and phosphoric acid. For Mass-Spec (MS) compatible applications the phosphoric acid needs to be replaced with formic acid. Smaller 3 µm particles columns available for fast UPLC applications. This liquid chromatography method is scalable and can be used for isolation impurities in preparative separation. It also suitable for pharmacokinetics.

The result was obtained by a proprietary SIELC algorithm. It may deviate from the actual experimental data. The experimental data are available upon request. Contact us by e-mail:" or by phone: 847-229-2629.
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Application Analytes: