The CAS Registry Mumber 848489-82-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,4,8,4,8 and 9 respectively; the second part has 2 digits, 8 and 2 respectively. Calculate Digit Verification of CAS Registry Number 848489-82: (8*8)+(7*4)+(6*8)+(5*4)+(4*8)+(3*9)+(2*8)+(1*2)=237 237 % 10 = 7 So 848489-82-7 is a valid CAS Registry Number.
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