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874480-17-8

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874480-17-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 874480-17-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,4,4,8 and 0 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 874480-17:
(8*8)+(7*7)+(6*4)+(5*4)+(4*8)+(3*0)+(2*1)+(1*7)=198
198 % 10 = 8
So 874480-17-8 is a valid CAS Registry Number.

874480-17-8Relevant articles and documents

Facially selective cu-catalyzed carbozincation of cyclopropenes using arylzinc reagents formed by sequential I/Mg/Zn exchange

Tarwade, Vinod,Selvaraj, Ramajeyam,Fox, Joseph M.

, p. 9900 - 9904 (2012)

Described is a Cu-catalyzed directed carbozincation of cyclopropenes with organozinc reagents prepared by I/Mg/Zn exchange. This protocol broadens the scope with respect to functional group tolerance and enables use of aryl iodide precursors, rather than purified diorganozinc precursors. Critical to diastereoselectivity of the carbozincation step is the removal of magnesium halide salts after transmetalation with ZnCl2.

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