The CAS Registry Mumber 53072-87-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,3,0,7 and 2 respectively; the second part has 2 digits, 8 and 7 respectively. Calculate Digit Verification of CAS Registry Number 53072-87: (7*5)+(6*3)+(5*0)+(4*7)+(3*2)+(2*8)+(1*7)=110 110 % 10 = 0 So 53072-87-0 is a valid CAS Registry Number.
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