109023-14-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109023-14-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,0,2 and 3 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 109023-14:
(8*1)+(7*0)+(6*9)+(5*0)+(4*2)+(3*3)+(2*1)+(1*4)=85
85 % 10 = 5
So 109023-14-5 is a valid CAS Registry Number.
109023-14-5Relevant articles and documents
Effect of a β-Silyl Group on the Regiochemistry of Enolisation of Ketones
Engel, Wolfhard,Fleming, Ian,Smithers, Roger H.
, p. 1637 - 1642 (2007/10/02)
1-Dimethyl(phenyl)silylpentan-3-one (4), 3-dimethyl(phenyl)silylcyclopentanone (10) and 3-dimethyl(phenyl)silylcyclohexanone (16) are deprotonated by lithium di-isopropylamide in favour of enolate formation away from the silyl group to the extent of 70:30
