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141483-98-9

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141483-98-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 141483-98-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,1,4,8 and 3 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 141483-98:
(8*1)+(7*4)+(6*1)+(5*4)+(4*8)+(3*3)+(2*9)+(1*8)=129
129 % 10 = 9
So 141483-98-9 is a valid CAS Registry Number.

141483-98-9Relevant articles and documents

Stereoselective [4+2]-Cycloaddition with Chiral Alkenylboranes

Brown, M. Kevin,Houk, K. N.,Ni, Dongshun,Witherspoon, Brittany P.,Zhang, Hong,Zhou, Chen

supporting information, p. 11432 - 11439 (2020/05/18)

A method for the stereoselective [4+2]-cycloaddition of alkenylboranes and dienes is presented. This transformation was accomplished through the introduction of a new strategy that involves the use of chiral N-protonated alkenyl oxazaborolidines as dieneophiles. The reaction leads to the formation of products that can be readily derivatized to more complex structural motifs through stereospecific transformations of the C?B bond such as oxidation and homologation. Detailed computation evaluation of the reaction has uncovered a surprising role of the counterion on stereoselectivity.

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