The CAS Registry Mumber 112593-95-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,2,5,9 and 3 respectively; the second part has 2 digits, 9 and 5 respectively. Calculate Digit Verification of CAS Registry Number 112593-95: (8*1)+(7*1)+(6*2)+(5*5)+(4*9)+(3*3)+(2*9)+(1*5)=120 120 % 10 = 0 So 112593-95-0 is a valid CAS Registry Number.