169789-21-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 169789-21-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,9,7,8 and 9 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 169789-21:
(8*1)+(7*6)+(6*9)+(5*7)+(4*8)+(3*9)+(2*2)+(1*1)=203
203 % 10 = 3
So 169789-21-3 is a valid CAS Registry Number.
169789-21-3Relevant articles and documents
Synthesis of a hexadecasaccharide fragment of the O-polysaccharide of Shigella dysenteriae type 1
Pozsgay, Vince
, p. 6673 - 6681 (2007/10/02)
A synthetic route is described to a hexadecasaccharide fragment of the O-polysaccharide portion of the lipopolysaccharide of Shigella dysenteriae type 1, a Gram-negative human pathogen. The key intermediate was a trichloroacetimidate derivative of the tet