The CAS Registry Mumber 112547-41-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,2,5,4 and 7 respectively; the second part has 2 digits, 4 and 1 respectively. Calculate Digit Verification of CAS Registry Number 112547-41: (8*1)+(7*1)+(6*2)+(5*5)+(4*4)+(3*7)+(2*4)+(1*1)=98 98 % 10 = 8 So 112547-41-8 is a valid CAS Registry Number.
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