69689-80-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 69689-80-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,9,6,8 and 9 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 69689-80:
(7*6)+(6*9)+(5*6)+(4*8)+(3*9)+(2*8)+(1*0)=201
201 % 10 = 1
So 69689-80-1 is a valid CAS Registry Number.