The CAS Registry Mumber 112946-31-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,2,9,4 and 6 respectively; the second part has 2 digits, 3 and 1 respectively. Calculate Digit Verification of CAS Registry Number 112946-31: (8*1)+(7*1)+(6*2)+(5*9)+(4*4)+(3*6)+(2*3)+(1*1)=113 113 % 10 = 3 So 112946-31-3 is a valid CAS Registry Number.
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