6931-68-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6931-68-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,9,3 and 1 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 6931-68:
(6*6)+(5*9)+(4*3)+(3*1)+(2*6)+(1*8)=116
116 % 10 = 6
So 6931-68-6 is a valid CAS Registry Number.