The CAS Registry Mumber 114264-04-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,4,2,6 and 4 respectively; the second part has 2 digits, 0 and 4 respectively. Calculate Digit Verification of CAS Registry Number 114264-04: (8*1)+(7*1)+(6*4)+(5*2)+(4*6)+(3*4)+(2*0)+(1*4)=89 89 % 10 = 9 So 114264-04-9 is a valid CAS Registry Number.