820964-05-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 820964-05-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,2,0,9,6 and 4 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 820964-05:
(8*8)+(7*2)+(6*0)+(5*9)+(4*6)+(3*4)+(2*0)+(1*5)=164
164 % 10 = 4
So 820964-05-4 is a valid CAS Registry Number.