The CAS Registry Mumber 114883-60-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,4,8,8 and 3 respectively; the second part has 2 digits, 6 and 0 respectively. Calculate Digit Verification of CAS Registry Number 114883-60: (8*1)+(7*1)+(6*4)+(5*8)+(4*8)+(3*3)+(2*6)+(1*0)=132 132 % 10 = 2 So 114883-60-2 is a valid CAS Registry Number.