The CAS Registry Mumber 119062-18-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,9,0,6 and 2 respectively; the second part has 2 digits, 1 and 8 respectively. Calculate Digit Verification of CAS Registry Number 119062-18: (8*1)+(7*1)+(6*9)+(5*0)+(4*6)+(3*2)+(2*1)+(1*8)=109 109 % 10 = 9 So 119062-18-9 is a valid CAS Registry Number.