31268-68-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 31268-68-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,2,6 and 8 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 31268-68:
(7*3)+(6*1)+(5*2)+(4*6)+(3*8)+(2*6)+(1*8)=105
105 % 10 = 5
So 31268-68-5 is a valid CAS Registry Number.