The CAS Registry Mumber 34459-92-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,4,4,5 and 9 respectively; the second part has 2 digits, 9 and 2 respectively. Calculate Digit Verification of CAS Registry Number 34459-92: (7*3)+(6*4)+(5*4)+(4*5)+(3*9)+(2*9)+(1*2)=132 132 % 10 = 2 So 34459-92-2 is a valid CAS Registry Number.
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