The CAS Registry Mumber 95122-04-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,5,1,2 and 2 respectively; the second part has 2 digits, 0 and 4 respectively. Calculate Digit Verification of CAS Registry Number 95122-04: (7*9)+(6*5)+(5*1)+(4*2)+(3*2)+(2*0)+(1*4)=116 116 % 10 = 6 So 95122-04-6 is a valid CAS Registry Number.