131653-50-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131653-50-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,6,5 and 3 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 131653-50:
(8*1)+(7*3)+(6*1)+(5*6)+(4*5)+(3*3)+(2*5)+(1*0)=104
104 % 10 = 4
So 131653-50-4 is a valid CAS Registry Number.
131653-50-4Relevant academic research and scientific papers
A New Synthesis of (R)-GABOB and (R)-Oxiracetam
Orena, Mario,Porzi, Gianni,Sandri, Sergio
, p. 2701 - 2711 (2007/10/02)
The synthesis of both (R)-GABOB 1 and (R)-Oxiracetam 2 through the same diastereomer intermediate 8a is reported.
