227454-55-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 227454-55-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,7,4,5 and 4 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 227454-55:
(8*2)+(7*2)+(6*7)+(5*4)+(4*5)+(3*4)+(2*5)+(1*5)=139
139 % 10 = 9
So 227454-55-9 is a valid CAS Registry Number.
227454-55-9Relevant academic research and scientific papers
2-Bromoethynyl aryl sulfones as versatile dienophiles: A formal synthesis of epibatidine
Zhang, Chunming,Ballay II, Charles J.,Trudcll, Mark L.
, p. 675 - 676 (2007/10/03)
A facile synthesis of 2-bromoethynyl aryl sulfones has been developed; the reactivity of these versatile dienophiles in [4 + 2] cycloaddition reactions as well as application in a formal synthesis of epibatidine is described.
