The CAS Registry Mumber 60324-64-3 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, 6 and 4 respectively. Calculate Digit Verification of CAS Registry Number 60324-64: (7*6)+(6*0)+(5*3)+(4*2)+(3*4)+(2*6)+(1*4)=93 93 % 10 = 3 So 60324-64-3 is a valid CAS Registry Number.