The CAS Registry Mumber 114044-43-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,4,0,4 and 4 respectively; the second part has 2 digits, 4 and 3 respectively. Calculate Digit Verification of CAS Registry Number 114044-43: (8*1)+(7*1)+(6*4)+(5*0)+(4*4)+(3*4)+(2*4)+(1*3)=78 78 % 10 = 8 So 114044-43-8 is a valid CAS Registry Number.