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Tris-(p-ethyl-phenylthio)-phosphin, also known as TPP, is a phosphorus-containing organosulfur compound with the chemical formula C18H21PS3. It is a white crystalline solid that is soluble in common organic solvents such as chloroform, dichloromethane, and acetone. TPP is characterized by its three p-ethyl-phenylthio groups attached to a central phosphorus atom, which gives it unique chemical and physical properties. Tris-(p-ethyl-phenylthio)-phosphin has potential applications in various fields, including materials science, as a ligand in coordination chemistry, and as a precursor in the synthesis of other organophosphorus compounds. Due to its stability and reactivity, TPP can be used in the development of new catalysts, pharmaceuticals, and agrochemicals.

3753-23-9

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3753-23-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 3753-23-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,7,5 and 3 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 3753-23:
(6*3)+(5*7)+(4*5)+(3*3)+(2*2)+(1*3)=89
89 % 10 = 9
So 3753-23-9 is a valid CAS Registry Number.

3753-23-9Downstream Products

3753-23-9Relevant academic research and scientific papers

The Reaction of Alkyl-substituted Thioanisoles with PCl3 and AlCl3: a Route to Benzothiadiphospholobenzothiadiphosphole Derivatives

Baccolini, Graziano,Mezzina, Elisabetta,Todesko, Paolo Edgardo

, p. 3281 - 3284 (2007/10/02)

The synthesis of benzothiadiphospholobenzothiadiphosphole derivatives starting from alkyl-substituted thioanisoles and PCl3-AlCl3 is reported.The reaction is carried out at reflux in the absence of solvent and the yields are dependent on the starting sulphide.These new heterocycles can be purified by simple filtration on a Florisil column and have been characterized by 1H-, 13C-, (1H)31P-n.m.r. and mass spectroscopy analyses.New unexpected findings are also described.

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