The CAS Registry Mumber 39479-46-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,9,4,7 and 9 respectively; the second part has 2 digits, 4 and 6 respectively. Calculate Digit Verification of CAS Registry Number 39479-46: (7*3)+(6*9)+(5*4)+(4*7)+(3*9)+(2*4)+(1*6)=164 164 % 10 = 4 So 39479-46-4 is a valid CAS Registry Number.
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