156812-61-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 156812-61-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,8,1 and 2 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 156812-61:
(8*1)+(7*5)+(6*6)+(5*8)+(4*1)+(3*2)+(2*6)+(1*1)=142
142 % 10 = 2
So 156812-61-2 is a valid CAS Registry Number.
156812-61-2Relevant articles and documents
Amelioration of the leaving group ability of the aryl sulfone moiety via intramolecular oxygen silylation
Van Dort,Fuchs
, p. 5657 - 5661 (1994)
Phenyl sulfones bearing an ortho dimethylsilyl group capable of conversion to the aryldimethylsilyl triflate moiety display significantly enhanced leaving group ability relative to simple phenyl sulfones. Under mild acid catalyzed conditions, ortho-allyld
