The CAS Registry Mumber 95287-15-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,5,2,8 and 7 respectively; the second part has 2 digits, 1 and 5 respectively. Calculate Digit Verification of CAS Registry Number 95287-15: (7*9)+(6*5)+(5*2)+(4*8)+(3*7)+(2*1)+(1*5)=163 163 % 10 = 3 So 95287-15-3 is a valid CAS Registry Number.