68121-31-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 68121-31-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,8,1,2 and 1 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 68121-31:
(7*6)+(6*8)+(5*1)+(4*2)+(3*1)+(2*3)+(1*1)=113
113 % 10 = 3
So 68121-31-3 is a valid CAS Registry Number.