The CAS Registry Mumber 114185-10-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,4,1,8 and 5 respectively; the second part has 2 digits, 1 and 0 respectively. Calculate Digit Verification of CAS Registry Number 114185-10: (8*1)+(7*1)+(6*4)+(5*1)+(4*8)+(3*5)+(2*1)+(1*0)=93 93 % 10 = 3 So 114185-10-3 is a valid CAS Registry Number.