The CAS Registry Mumber 51154-62-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,1,1,5 and 4 respectively; the second part has 2 digits, 6 and 2 respectively. Calculate Digit Verification of CAS Registry Number 51154-62: (7*5)+(6*1)+(5*1)+(4*5)+(3*4)+(2*6)+(1*2)=92 92 % 10 = 2 So 51154-62-2 is a valid CAS Registry Number.
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