203174-43-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 203174-43-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,3,1,7 and 4 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 203174-43:
(8*2)+(7*0)+(6*3)+(5*1)+(4*7)+(3*4)+(2*4)+(1*3)=90
90 % 10 = 0
So 203174-43-0 is a valid CAS Registry Number.
203174-43-0Relevant articles and documents
Asymmetric Synthesis of Differentially Protected 2,7-Diaminosuberic Acid, a Ring-Closure Metathesis Approach
Williams, Robert M.,Liu, Jiwen
, p. 2130 - 2132 (1998)
An efficient and versatile method has been developed for the synthesis of a selectively protected 2,7-diaminosuberic acid derivative. A Grubbs ring-closure olefin metathesis reaction was used as a key step on an allylglycine-derived template.