The CAS Registry Mumber 94566-06-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,4,5,6 and 6 respectively; the second part has 2 digits, 0 and 6 respectively. Calculate Digit Verification of CAS Registry Number 94566-06: (7*9)+(6*4)+(5*5)+(4*6)+(3*6)+(2*0)+(1*6)=160 160 % 10 = 0 So 94566-06-0 is a valid CAS Registry Number.