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1240816-17-4

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1240816-17-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1240816-17-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,4,0,8,1 and 6 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1240816-17:
(9*1)+(8*2)+(7*4)+(6*0)+(5*8)+(4*1)+(3*6)+(2*1)+(1*7)=124
124 % 10 = 4
So 1240816-17-4 is a valid CAS Registry Number.

1240816-17-4Relevant articles and documents

Addressing the configuration stability of lithiated secondary benzylic carbamates for the development of a noncryogenic stereospecific boronate rearrangement

Fandrick, Keith R.,Patel, Nitinchandra D.,Mulder, Jason A.,Gao, Joe,Konrad, Michael,Archer, Elizabeth,Buono, Frederic G.,Duran, Adil,Schmid, Rolf,Daeubler, Juergen,Fandrick, Daniel R.,Ma, Shengli,Grinberg, Nelu,Lee, Heewon,Busacca, Carl A.,Song, Jinhua J.,Yee, Nathan K.,Senanayake, Chris H.

, p. 4360 - 4363 (2015/02/19)

A practical noncryogenic process for the Aggarwal stereospecific boronate rearrangement with chiral secondary benzylic carbamates has been developed. The use of LDA instead of sec-BuLi combined with an in situ trapping of the unstable lithiated carbamate was critical to success. Furthermore, this new process increased the substrate scope to include the versatile aryl iodide and bromide substrates. The methodology was applied to a diverse array of substrates and was demonstrated on multikilogram scale.

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