The CAS Registry Mumber 80460-22-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,0,4,6 and 0 respectively; the second part has 2 digits, 2 and 2 respectively. Calculate Digit Verification of CAS Registry Number 80460-22: (7*8)+(6*0)+(5*4)+(4*6)+(3*0)+(2*2)+(1*2)=106 106 % 10 = 6 So 80460-22-6 is a valid CAS Registry Number.