The CAS Registry Mumber 95373-35-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,5,3,7 and 3 respectively; the second part has 2 digits, 3 and 5 respectively. Calculate Digit Verification of CAS Registry Number 95373-35: (7*9)+(6*5)+(5*3)+(4*7)+(3*3)+(2*3)+(1*5)=156 156 % 10 = 6 So 95373-35-6 is a valid CAS Registry Number.