The CAS Registry Mumber 95958-00-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,5,9,5 and 8 respectively; the second part has 2 digits, 0 and 0 respectively. Calculate Digit Verification of CAS Registry Number 95958-00: (7*9)+(6*5)+(5*9)+(4*5)+(3*8)+(2*0)+(1*0)=182 182 % 10 = 2 So 95958-00-2 is a valid CAS Registry Number.