The CAS Registry Mumber 60324-71-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,0,3,2 and 4 respectively; the second part has 2 digits, 7 and 1 respectively. Calculate Digit Verification of CAS Registry Number 60324-71: (7*6)+(6*0)+(5*3)+(4*2)+(3*4)+(2*7)+(1*1)=92 92 % 10 = 2 So 60324-71-2 is a valid CAS Registry Number.