The CAS Registry Mumber 95455-52-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,5,4,5 and 5 respectively; the second part has 2 digits, 5 and 2 respectively. Calculate Digit Verification of CAS Registry Number 95455-52: (7*9)+(6*5)+(5*4)+(4*5)+(3*5)+(2*5)+(1*2)=160 160 % 10 = 0 So 95455-52-0 is a valid CAS Registry Number.