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O-(4-chlorophenyl)dimethylphosphinothioate, also known as chlorpyrifos, is an organophosphorus compound widely used as an insecticide in agriculture and household applications. It functions by inhibiting the enzyme acetylcholinesterase in insects, leading to a buildup of acetylcholine and subsequent overstimulation of their nervous system, ultimately causing paralysis and death. This chemical is effective against a broad spectrum of pests, including aphids, mites, and various types of beetles. However, due to its potential health risks and environmental concerns, such as persistence in soil and water, as well as its impact on non-target organisms like bees and aquatic life, there has been a growing movement towards the restriction or banning of chlorpyrifos in several countries.

3186-33-2

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3186-33-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 3186-33-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,1,8 and 6 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 3186-33:
(6*3)+(5*1)+(4*8)+(3*6)+(2*3)+(1*3)=82
82 % 10 = 2
So 3186-33-2 is a valid CAS Registry Number.

3186-33-2Downstream Products

3186-33-2Relevant academic research and scientific papers

Metal-catalyzed phosphinyl ester forming reaction of alcohols and phenols with diphosphine disulfides and a dioxide

Arisawa, Mieko,Yamaguchi, Masahiko

experimental part, p. 4840 - 4842 (2010/10/02)

Transition metal complexes catalyzed the dialkylphosphinothioation reaction of alcohols and phenols with tetraalkyldiphosphine disulfides in high yields. Phenols were reacted in the presence of RhH(PPh3)4 and 1,2-bis(dimethylphosphino)ethane under THF reflux, and alcohols with Pd(OAc)2 and 1,2-bis(diphenylphosphino)benzene under chlorobenzene reflux. Primary alcohols reacted faster than secondary alcohols under these conditions, and protected tyrosine and serine were phosphinothioated with minimal racemization. Tetraphenyldiphosphine dioxide also underwent the P-O bond formation reaction.

A concerted mechanism for the transfer of the thiophosphinoyl group from aryl dimethylphosphinothioate esters to oxyanionic nucleophiles in aqueous solution

Onyido, Ikenna,Swierczek, Krzysztof,Purcell, Jamie,Hengge, Alvan C.

, p. 7703 - 7711 (2007/10/03)

Earlier work on the hydrolysis of aryl phosphinothioate esters has led to contradictory mechanistic conclusions. To resolve this mechanistic ambiguity, we have measured linear free energy relationships (βnuc and βIg) and kinetic isot

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