109690-03-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109690-03-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,6,9 and 0 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 109690-03:
(8*1)+(7*0)+(6*9)+(5*6)+(4*9)+(3*0)+(2*0)+(1*3)=131
131 % 10 = 1
So 109690-03-1 is a valid CAS Registry Number.