The CAS Registry Mumber 96124-48-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,6,1,2 and 4 respectively; the second part has 2 digits, 4 and 8 respectively. Calculate Digit Verification of CAS Registry Number 96124-48: (7*9)+(6*6)+(5*1)+(4*2)+(3*4)+(2*4)+(1*8)=140 140 % 10 = 0 So 96124-48-0 is a valid CAS Registry Number.