118621-73-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 118621-73-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,8,6,2 and 1 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 118621-73:
(8*1)+(7*1)+(6*8)+(5*6)+(4*2)+(3*1)+(2*7)+(1*3)=121
121 % 10 = 1
So 118621-73-1 is a valid CAS Registry Number.
118621-73-1Relevant articles and documents
The Regioselective Addition Reaction of 1,2-Benzoquinones with Silyl Enol Ethers Catalyzed by Trityl Perchlorate
Sagawa, Yukihiro,Kobayashi, Shu,Mukaiyama, Teruaki
, p. 1105 - 1108 (1988)
In the presence of a catalytic amount of trityl perchlorate, 1,2-benzoquinones react with silyl enol ethers to produce the corresponding adducts, homoacyl-pyrocatechol derivatives, regioselectively in good yields.
