109791-99-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109791-99-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,7,9 and 1 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 109791-99:
(8*1)+(7*0)+(6*9)+(5*7)+(4*9)+(3*1)+(2*9)+(1*9)=163
163 % 10 = 3
So 109791-99-3 is a valid CAS Registry Number.