The CAS Registry Mumber 60136-06-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,0,1,3 and 6 respectively; the second part has 2 digits, 0 and 6 respectively. Calculate Digit Verification of CAS Registry Number 60136-06: (7*6)+(6*0)+(5*1)+(4*3)+(3*6)+(2*0)+(1*6)=83 83 % 10 = 3 So 60136-06-3 is a valid CAS Registry Number.