The CAS Registry Mumber 714290-19-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,1,4,2,9 and 0 respectively; the second part has 2 digits, 1 and 9 respectively. Calculate Digit Verification of CAS Registry Number 714290-19: (8*7)+(7*1)+(6*4)+(5*2)+(4*9)+(3*0)+(2*1)+(1*9)=144 144 % 10 = 4 So 714290-19-4 is a valid CAS Registry Number.
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