The CAS Registry Mumber 112562-29-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,2,5,6 and 2 respectively; the second part has 2 digits, 2 and 9 respectively. Calculate Digit Verification of CAS Registry Number 112562-29: (8*1)+(7*1)+(6*2)+(5*5)+(4*6)+(3*2)+(2*2)+(1*9)=95 95 % 10 = 5 So 112562-29-5 is a valid CAS Registry Number.