The CAS Registry Mumber 96453-53-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,6,4,5 and 3 respectively; the second part has 2 digits, 5 and 3 respectively. Calculate Digit Verification of CAS Registry Number 96453-53: (7*9)+(6*6)+(5*4)+(4*5)+(3*3)+(2*5)+(1*3)=161 161 % 10 = 1 So 96453-53-1 is a valid CAS Registry Number.
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