The CAS Registry Mumber 14585-96-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,4,5,8 and 5 respectively; the second part has 2 digits, 9 and 6 respectively. Calculate Digit Verification of CAS Registry Number 14585-96: (7*1)+(6*4)+(5*5)+(4*8)+(3*5)+(2*9)+(1*6)=127 127 % 10 = 7 So 14585-96-7 is a valid CAS Registry Number.