The CAS Registry Mumber 132842-63-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,2,8,4 and 2 respectively; the second part has 2 digits, 6 and 3 respectively. Calculate Digit Verification of CAS Registry Number 132842-63: (8*1)+(7*3)+(6*2)+(5*8)+(4*4)+(3*2)+(2*6)+(1*3)=118 118 % 10 = 8 So 132842-63-8 is a valid CAS Registry Number.
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