The CAS Registry Mumber 1326312-05-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,2,6,3,1 and 2 respectively; the second part has 2 digits, 0 and 5 respectively. Calculate Digit Verification of CAS Registry Number 1326312-05: (9*1)+(8*3)+(7*2)+(6*6)+(5*3)+(4*1)+(3*2)+(2*0)+(1*5)=113 113 % 10 = 3 So 1326312-05-3 is a valid CAS Registry Number.
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