680-97-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 680-97-7 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,8 and 0 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 680-97:
(5*6)+(4*8)+(3*0)+(2*9)+(1*7)=87
87 % 10 = 7
So 680-97-7 is a valid CAS Registry Number.