The CAS Registry Mumber 14246-49-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,4,2,4 and 6 respectively; the second part has 2 digits, 4 and 9 respectively. Calculate Digit Verification of CAS Registry Number 14246-49: (7*1)+(6*4)+(5*2)+(4*4)+(3*6)+(2*4)+(1*9)=92 92 % 10 = 2 So 14246-49-2 is a valid CAS Registry Number.