209965-31-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 209965-31-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,9,9,6 and 5 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 209965-31:
(8*2)+(7*0)+(6*9)+(5*9)+(4*6)+(3*5)+(2*3)+(1*1)=161
161 % 10 = 1
So 209965-31-1 is a valid CAS Registry Number.
209965-31-1Relevant academic research and scientific papers
First efficient synthesis of chlorogenic acid
Sefkow, Michael
, p. 1137 - 1141 (2007/10/03)
The first efficient synthesis of chlorogenic acid (1) was achieved in four steps (three purifications) from quinic acid (2). The overall yield was 65%, The key intermediate was quinic acid bisacetonide (6), selectively prepared by a modified kinetic aceta
