The CAS Registry Mumber 93295-84-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,3,2,9 and 5 respectively; the second part has 2 digits, 8 and 4 respectively. Calculate Digit Verification of CAS Registry Number 93295-84: (7*9)+(6*3)+(5*2)+(4*9)+(3*5)+(2*8)+(1*4)=162 162 % 10 = 2 So 93295-84-2 is a valid CAS Registry Number.