The CAS Registry Mumber 95093-86-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,5,0,9 and 3 respectively; the second part has 2 digits, 8 and 6 respectively. Calculate Digit Verification of CAS Registry Number 95093-86: (7*9)+(6*5)+(5*0)+(4*9)+(3*3)+(2*8)+(1*6)=160 160 % 10 = 0 So 95093-86-0 is a valid CAS Registry Number.