668461-70-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 668461-70-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,8,4,6 and 1 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 668461-70:
(8*6)+(7*6)+(6*8)+(5*4)+(4*6)+(3*1)+(2*7)+(1*0)=199
199 % 10 = 9
So 668461-70-9 is a valid CAS Registry Number.
668461-70-9Relevant articles and documents
Direct Vinylogous Mannich-Type Reactions via Ring Opening and Rearrangement of Vinyloxiranes
Lautens, Mark,Tayama, Eiji,Nguyen, Duy
, p. 345 - 347 (2007/10/03)
(Matrix presented) The first synthetic application of 2-methyl-2- vinyloxirane as a masked dienolate has been successfully demonstrated in the direct vinylogous Mannich-type reaction with an α-imino ester as an electrophile. The Mannich adduct was a usefu
