859791-20-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 859791-20-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,9,7,9 and 1 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 859791-20:
(8*8)+(7*5)+(6*9)+(5*7)+(4*9)+(3*1)+(2*2)+(1*0)=231
231 % 10 = 1
So 859791-20-1 is a valid CAS Registry Number.