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5-Bromo-6-(toluene-4-sulfonyl)-hexan-1-ol is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

200641-20-9

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200641-20-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 200641-20-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,0,6,4 and 1 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 200641-20:
(8*2)+(7*0)+(6*0)+(5*6)+(4*4)+(3*1)+(2*2)+(1*0)=69
69 % 10 = 9
So 200641-20-9 is a valid CAS Registry Number.

200641-20-9Relevant academic research and scientific papers

A Stereoselective Approach to 2,6-Disubstituted Tetrahydropyrans by Conjugate Addition Reactions of Vinyl Sulfones

Craig,Edwards,Muldoon

, p. 1318 - 1320 (1997)

A highly stereoselective synthesis of cis-2,6-disubstituted tetrahydropyrans from functionalised 5-hexen-1-ols has been developed. Free radical addition of para-toluenesulfonyl iodide to the hexenol and DBU-mediated elimination of HI from the intermediate β-iodosulfones gives vinyl sulfones: subsequent conjugate addition of the potassium alkoxide leads to a highly stereoselective (≥30:1) cyclisation.

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