The CAS Registry Mumber 38795-63-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,8,7,9 and 5 respectively; the second part has 2 digits, 6 and 3 respectively. Calculate Digit Verification of CAS Registry Number 38795-63: (7*3)+(6*8)+(5*7)+(4*9)+(3*5)+(2*6)+(1*3)=170 170 % 10 = 0 So 38795-63-0 is a valid CAS Registry Number.