The CAS Registry Mumber 114827-92-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,4,8,2 and 7 respectively; the second part has 2 digits, 9 and 2 respectively. Calculate Digit Verification of CAS Registry Number 114827-92: (8*1)+(7*1)+(6*4)+(5*8)+(4*2)+(3*7)+(2*9)+(1*2)=128 128 % 10 = 8 So 114827-92-8 is a valid CAS Registry Number.