The CAS Registry Mumber 119089-47-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,9,0,8 and 9 respectively; the second part has 2 digits, 4 and 7 respectively. Calculate Digit Verification of CAS Registry Number 119089-47: (8*1)+(7*1)+(6*9)+(5*0)+(4*8)+(3*9)+(2*4)+(1*7)=143 143 % 10 = 3 So 119089-47-3 is a valid CAS Registry Number.