The CAS Registry Mumber 1122006-95-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,2,2,0,0 and 6 respectively; the second part has 2 digits, 9 and 5 respectively. Calculate Digit Verification of CAS Registry Number 1122006-95: (9*1)+(8*1)+(7*2)+(6*2)+(5*0)+(4*0)+(3*6)+(2*9)+(1*5)=84 84 % 10 = 4 So 1122006-95-4 is a valid CAS Registry Number.