223418-05-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 223418-05-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,3,4,1 and 8 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 223418-05:
(8*2)+(7*2)+(6*3)+(5*4)+(4*1)+(3*8)+(2*0)+(1*5)=101
101 % 10 = 1
So 223418-05-1 is a valid CAS Registry Number.
223418-05-1Relevant articles and documents
(-)-Sparteine-mediated stereoselective intramolecular conjugate addition reactions of dienes and enynes
Oestreich,Hoppe
, p. 1881 - 1884 (2007/10/03)
Enantioenriched carbanionic pairs generated by the asymmetric deprotonation of carbamate esters with the chiral base s-butyllithium/(-)- sparteine undergo smoothly intramolecular conjugate addition reactions to dienes and enynes in high yields.
