The CAS Registry Mumber 11093-42-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,1,0,9 and 3 respectively; the second part has 2 digits, 4 and 2 respectively. Calculate Digit Verification of CAS Registry Number 11093-42: (7*1)+(6*1)+(5*0)+(4*9)+(3*3)+(2*4)+(1*2)=68 68 % 10 = 8 So 11093-42-8 is a valid CAS Registry Number.
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