The CAS Registry Mumber 114847-08-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,4,8,4 and 7 respectively; the second part has 2 digits, 0 and 8 respectively. Calculate Digit Verification of CAS Registry Number 114847-08: (8*1)+(7*1)+(6*4)+(5*8)+(4*4)+(3*7)+(2*0)+(1*8)=124 124 % 10 = 4 So 114847-08-4 is a valid CAS Registry Number.