131691-07-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131691-07-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,6,9 and 1 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 131691-07:
(8*1)+(7*3)+(6*1)+(5*6)+(4*9)+(3*1)+(2*0)+(1*7)=111
111 % 10 = 1
So 131691-07-1 is a valid CAS Registry Number.