The CAS Registry Mumber 57466-98-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,4,6 and 6 respectively; the second part has 2 digits, 9 and 8 respectively. Calculate Digit Verification of CAS Registry Number 57466-98: (7*5)+(6*7)+(5*4)+(4*6)+(3*6)+(2*9)+(1*8)=165 165 % 10 = 5 So 57466-98-5 is a valid CAS Registry Number.
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