The CAS Registry Mumber 34447-60-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,4,4,4 and 7 respectively; the second part has 2 digits, 6 and 0 respectively. Calculate Digit Verification of CAS Registry Number 34447-60: (7*3)+(6*4)+(5*4)+(4*4)+(3*7)+(2*6)+(1*0)=114 114 % 10 = 4 So 34447-60-4 is a valid CAS Registry Number.
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