The CAS Registry Mumber 96475-67-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,6,4,7 and 5 respectively; the second part has 2 digits, 6 and 7 respectively. Calculate Digit Verification of CAS Registry Number 96475-67: (7*9)+(6*6)+(5*4)+(4*7)+(3*5)+(2*6)+(1*7)=181 181 % 10 = 1 So 96475-67-1 is a valid CAS Registry Number.