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765908-40-5

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765908-40-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 765908-40-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,6,5,9,0 and 8 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 765908-40:
(8*7)+(7*6)+(6*5)+(5*9)+(4*0)+(3*8)+(2*4)+(1*0)=205
205 % 10 = 5
So 765908-40-5 is a valid CAS Registry Number.

765908-40-5Downstream Products

765908-40-5Relevant articles and documents

Deprotection of pinacolyl boronate esters by transesterification with polystyrene-boronic acid

Pennington, Thomas E.,Kardiman, Cynantya,Hutton, Craig A.

, p. 6657 - 6660 (2007/10/03)

A mild, efficient method for the deprotection of pinacolyl organoboronate esters is described. Treatment of the organoboronate ester with excess polystyrene-boronic acid followed by filtration and evaporation of the solvent provides the corresponding organoboronic acid. Mild deprotection of pinacolyl boronate esters to the corresponding boronic acids was achieved in the presence of excess polystyrene-boronic acid via a transesterification process. The procedure allows for the cleavage of pinacolyl boronate esters in the presence of sensitive functional groups. Crown Copyright

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