The CAS Registry Mumber 94228-79-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,4,2,2 and 8 respectively; the second part has 2 digits, 7 and 9 respectively. Calculate Digit Verification of CAS Registry Number 94228-79: (7*9)+(6*4)+(5*2)+(4*2)+(3*8)+(2*7)+(1*9)=152 152 % 10 = 2 So 94228-79-2 is a valid CAS Registry Number.
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