139189-72-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139189-72-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,1,8 and 9 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 139189-72:
(8*1)+(7*3)+(6*9)+(5*1)+(4*8)+(3*9)+(2*7)+(1*2)=163
163 % 10 = 3
So 139189-72-3 is a valid CAS Registry Number.
139189-72-3Relevant articles and documents
1,3-Dipolar cycloaddition of nitrones to sugar enlactones
Panfil,Belzecki,Urbanczyk-Lipkowska,Chmielewski
, p. 10087 - 10094 (1991)
It was found that 1,3-dipolar cycloaddition of nitrones derived from formaldehyde and acetaldehyde to sugar enlactones proceeds regio- and stereospecifically to afford anti-endo adducts.
