The CAS Registry Mumber 47877-12-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,7,8,7 and 7 respectively; the second part has 2 digits, 1 and 2 respectively. Calculate Digit Verification of CAS Registry Number 47877-12: (7*4)+(6*7)+(5*8)+(4*7)+(3*7)+(2*1)+(1*2)=163 163 % 10 = 3 So 47877-12-3 is a valid CAS Registry Number.
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