The CAS Registry Mumber 3329-94-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,3,2 and 9 respectively; the second part has 2 digits, 9 and 4 respectively. Calculate Digit Verification of CAS Registry Number 3329-94: (6*3)+(5*3)+(4*2)+(3*9)+(2*9)+(1*4)=90 90 % 10 = 0 So 3329-94-0 is a valid CAS Registry Number.
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