The CAS Registry Mumber 143708-49-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,7,0 and 8 respectively; the second part has 2 digits, 4 and 9 respectively. Calculate Digit Verification of CAS Registry Number 143708-49: (8*1)+(7*4)+(6*3)+(5*7)+(4*0)+(3*8)+(2*4)+(1*9)=130 130 % 10 = 0 So 143708-49-0 is a valid CAS Registry Number.
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