89784-60-1

Upstream product

• 77458-30-1 1-(4-chlorophenyl)-1H-pyrazol-4-ol 
• 7651-98-1 O-ethyl-S-propyl phosphorochloridate 
• 84260-11-7 O-[1-(4-chlorophenyl)pyrazol-4-yl]-O,O-diethyl phosphite 
• 629-19-6 Dipropyl disulfide 
• 96381-04-3 sodium O-ethyl-O-[1-(4-chlorophenyl)pyrazol-4-yl]phosphorothiolate 
• 106-94-5 propyl bromide 

Relevant academic research and scientific papers

Pyrazol-4-yl phosphites

A 4-pyrazolyl phosphorous acid ester of the following formula, STR1 (R is a lower alkyl group; Y is a phenyl group which may optionally be substituted by a halogen, halogens, a lower alkyl group or a halogen and a lower alkyl group.) which is produced by reacting corresponding 4-hydroxylpyrazole compound with a trialkyl phosphite. The ester gives 4-pyrazolyl phosphorothioate by the reaction with an alkylsulfenyl halide.

Pyrazol-4-yl phosphates and insecticidal and acaricidal use

Pyrazol-4-yl phosphates of the formula STR1 wherein R1 represents a lower alkyl group, R2 is a lower alkoxy group or a lower alkylthio group, R3 represents hydrogen or a lower alkoxycarbonyl group, X is oxygen or sulfur atom, Y represents a lower alkyl, a lower alkoxy or a lower alkylthio group, a halogen atom, nitro or trifluoromethyl, and n is zero or an integer of 1, 2 or 3, or Yn represents an alkylidenedioxy containing 1 to 3 carbon atoms, have marked insecticidal-acaricidal activity against household pests, plant pests, mites, etc. without substantial toxicity to warm-blooded animals and fishes.