209589-20-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 209589-20-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,9,5,8 and 9 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 209589-20:
(8*2)+(7*0)+(6*9)+(5*5)+(4*8)+(3*9)+(2*2)+(1*0)=158
158 % 10 = 8
So 209589-20-8 is a valid CAS Registry Number.