The CAS Registry Mumber 5152-69-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,1,5 and 2 respectively; the second part has 2 digits, 6 and 9 respectively. Calculate Digit Verification of CAS Registry Number 5152-69: (6*5)+(5*1)+(4*5)+(3*2)+(2*6)+(1*9)=82 82 % 10 = 2 So 5152-69-2 is a valid CAS Registry Number.
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