The CAS Registry Mumber 95113-36-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,5,1,1 and 3 respectively; the second part has 2 digits, 3 and 6 respectively. Calculate Digit Verification of CAS Registry Number 95113-36: (7*9)+(6*5)+(5*1)+(4*1)+(3*3)+(2*3)+(1*6)=123 123 % 10 = 3 So 95113-36-3 is a valid CAS Registry Number.