The CAS Registry Mumber 118582-94-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,8,5,8 and 2 respectively; the second part has 2 digits, 9 and 4 respectively. Calculate Digit Verification of CAS Registry Number 118582-94: (8*1)+(7*1)+(6*8)+(5*5)+(4*8)+(3*2)+(2*9)+(1*4)=148 148 % 10 = 8 So 118582-94-8 is a valid CAS Registry Number.
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