The CAS Registry Mumber 488818-70-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,8,8,8,1 and 8 respectively; the second part has 2 digits, 7 and 0 respectively. Calculate Digit Verification of CAS Registry Number 488818-70: (8*4)+(7*8)+(6*8)+(5*8)+(4*1)+(3*8)+(2*7)+(1*0)=218 218 % 10 = 8 So 488818-70-8 is a valid CAS Registry Number.
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