The CAS Registry Mumber 57060-69-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,0,6 and 0 respectively; the second part has 2 digits, 6 and 9 respectively. Calculate Digit Verification of CAS Registry Number 57060-69: (7*5)+(6*7)+(5*0)+(4*6)+(3*0)+(2*6)+(1*9)=122 122 % 10 = 2 So 57060-69-2 is a valid CAS Registry Number.