The CAS Registry Mumber 796112-46-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,9,6,1,1 and 2 respectively; the second part has 2 digits, 4 and 6 respectively. Calculate Digit Verification of CAS Registry Number 796112-46: (8*7)+(7*9)+(6*6)+(5*1)+(4*1)+(3*2)+(2*4)+(1*6)=184 184 % 10 = 4 So 796112-46-4 is a valid CAS Registry Number.