The CAS Registry Mumber 882491-73-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,8,2,4,9 and 1 respectively; the second part has 2 digits, 7 and 3 respectively. Calculate Digit Verification of CAS Registry Number 882491-73: (8*8)+(7*8)+(6*2)+(5*4)+(4*9)+(3*1)+(2*7)+(1*3)=208 208 % 10 = 8 So 882491-73-8 is a valid CAS Registry Number.
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