697-68-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 697-68-7 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,9 and 7 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 697-68:
(5*6)+(4*9)+(3*7)+(2*6)+(1*8)=107
107 % 10 = 7
So 697-68-7 is a valid CAS Registry Number.