The CAS Registry Mumber 80713-22-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,0,7,1 and 3 respectively; the second part has 2 digits, 2 and 2 respectively. Calculate Digit Verification of CAS Registry Number 80713-22: (7*8)+(6*0)+(5*7)+(4*1)+(3*3)+(2*2)+(1*2)=110 110 % 10 = 0 So 80713-22-0 is a valid CAS Registry Number.
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