The CAS Registry Mumber 92168-60-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,2,1,6 and 8 respectively; the second part has 2 digits, 6 and 0 respectively. Calculate Digit Verification of CAS Registry Number 92168-60: (7*9)+(6*2)+(5*1)+(4*6)+(3*8)+(2*6)+(1*0)=140 140 % 10 = 0 So 92168-60-0 is a valid CAS Registry Number.