256498-22-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 256498-22-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,6,4,9 and 8 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 256498-22:
(8*2)+(7*5)+(6*6)+(5*4)+(4*9)+(3*8)+(2*2)+(1*2)=173
173 % 10 = 3
So 256498-22-3 is a valid CAS Registry Number.
256498-22-3Relevant academic research and scientific papers
A facile synthesis of new substituted spiropyrimidine-2,4-diones
Bahy, Amira,Jegham, Nafaa,Kacem, Yakdhane,Ben Hassine, Béchir
, p. 592 - 595 (2013/11/06)
An efficient and short route to synthesise spiropyrimidine-2,4-diones was achieved using 1,3-dipolar cycloaddition followed by a cyclisation reaction. The reaction is regiospecific in all cases.
