The CAS Registry Mumber 96608-95-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,6,6,0 and 8 respectively; the second part has 2 digits, 9 and 5 respectively. Calculate Digit Verification of CAS Registry Number 96608-95: (7*9)+(6*6)+(5*6)+(4*0)+(3*8)+(2*9)+(1*5)=176 176 % 10 = 6 So 96608-95-6 is a valid CAS Registry Number.