The CAS Registry Mumber 15071-12-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,5,0,7 and 1 respectively; the second part has 2 digits, 1 and 2 respectively. Calculate Digit Verification of CAS Registry Number 15071-12: (7*1)+(6*5)+(5*0)+(4*7)+(3*1)+(2*1)+(1*2)=72 72 % 10 = 2 So 15071-12-2 is a valid CAS Registry Number.
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