The CAS Registry Mumber 94700-82-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,4,7,0 and 0 respectively; the second part has 2 digits, 8 and 2 respectively. Calculate Digit Verification of CAS Registry Number 94700-82: (7*9)+(6*4)+(5*7)+(4*0)+(3*0)+(2*8)+(1*2)=140 140 % 10 = 0 So 94700-82-0 is a valid CAS Registry Number.