656240-38-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 656240-38-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,5,6,2,4 and 0 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 656240-38:
(8*6)+(7*5)+(6*6)+(5*2)+(4*4)+(3*0)+(2*3)+(1*8)=159
159 % 10 = 9
So 656240-38-9 is a valid CAS Registry Number.
656240-38-9Relevant articles and documents
An Alternative Total Synthesis of (-)-Heliannuol E1
Kamei, Tomoyo,Shindo, Mitsuru,Shishido, Kozo
, p. 2395 - 2397 (2007/10/03)
An efficient, enantiocontrolled total synthesis of (-)-heliannuol E has been accomplished using a palladium-catalyzed cyclization of the six-membered oxygen containing heterocycle as the key reaction step.
