The CAS Registry Mumber 112630-08-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,2,6,3 and 0 respectively; the second part has 2 digits, 0 and 8 respectively. Calculate Digit Verification of CAS Registry Number 112630-08: (8*1)+(7*1)+(6*2)+(5*6)+(4*3)+(3*0)+(2*0)+(1*8)=77 77 % 10 = 7 So 112630-08-7 is a valid CAS Registry Number.