The CAS Registry Mumber 147095-73-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,7,0,9 and 5 respectively; the second part has 2 digits, 7 and 3 respectively. Calculate Digit Verification of CAS Registry Number 147095-73: (8*1)+(7*4)+(6*7)+(5*0)+(4*9)+(3*5)+(2*7)+(1*3)=146 146 % 10 = 6 So 147095-73-6 is a valid CAS Registry Number.