The CAS Registry Mumber 60627-08-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,0,6,2 and 7 respectively; the second part has 2 digits, 0 and 8 respectively. Calculate Digit Verification of CAS Registry Number 60627-08: (7*6)+(6*0)+(5*6)+(4*2)+(3*7)+(2*0)+(1*8)=109 109 % 10 = 9 So 60627-08-9 is a valid CAS Registry Number.