The CAS Registry Mumber 129460-14-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,4,6 and 0 respectively; the second part has 2 digits, 1 and 4 respectively. Calculate Digit Verification of CAS Registry Number 129460-14: (8*1)+(7*2)+(6*9)+(5*4)+(4*6)+(3*0)+(2*1)+(1*4)=126 126 % 10 = 6 So 129460-14-6 is a valid CAS Registry Number.