The CAS Registry Mumber 43076-08-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,3,0,7 and 6 respectively; the second part has 2 digits, 0 and 8 respectively. Calculate Digit Verification of CAS Registry Number 43076-08: (7*4)+(6*3)+(5*0)+(4*7)+(3*6)+(2*0)+(1*8)=100 100 % 10 = 0 So 43076-08-0 is a valid CAS Registry Number.