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Methanesulfonic acid (E)-2-benzenesulfinyl-1-phenethyl-but-2-enyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

257904-79-3

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257904-79-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 257904-79-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,7,9,0 and 4 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 257904-79:
(8*2)+(7*5)+(6*7)+(5*9)+(4*0)+(3*4)+(2*7)+(1*9)=173
173 % 10 = 3
So 257904-79-3 is a valid CAS Registry Number.

257904-79-3Downstream Products

257904-79-3Relevant academic research and scientific papers

A new method for synthesis of allenes, including an optically active form, from aldehydes and alkenyl aryl sulfoxides with carbon-carbon bond- formation

Satoh, Tsuyoshi,Kuramochi, Yuko,Inoue, Yujiro

, p. 8815 - 8818 (2007/10/03)

Ligand exchange reaction of β-mesyloxy sulfoxides or β-acetoxy sulfoxides, which were derived from alkenyl aryl sulfoxides and aldehydes in two steps, with n-BuLi or EtMgBr at low temperature gave allenes in good yields. Optically active allenes were synthesized starting from optically active 2-phenylethenyl p-tolyl sulfoxides.

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