The CAS Registry Mumber 115095-48-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,5,0,9 and 5 respectively; the second part has 2 digits, 4 and 8 respectively. Calculate Digit Verification of CAS Registry Number 115095-48: (8*1)+(7*1)+(6*5)+(5*0)+(4*9)+(3*5)+(2*4)+(1*8)=112 112 % 10 = 2 So 115095-48-2 is a valid CAS Registry Number.