The CAS Registry Mumber 99069-94-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,0,6 and 9 respectively; the second part has 2 digits, 9 and 4 respectively. Calculate Digit Verification of CAS Registry Number 99069-94: (7*9)+(6*9)+(5*0)+(4*6)+(3*9)+(2*9)+(1*4)=190 190 % 10 = 0 So 99069-94-0 is a valid CAS Registry Number.