The CAS Registry Mumber 119193-87-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,9,1,9 and 3 respectively; the second part has 2 digits, 8 and 7 respectively. Calculate Digit Verification of CAS Registry Number 119193-87: (8*1)+(7*1)+(6*9)+(5*1)+(4*9)+(3*3)+(2*8)+(1*7)=142 142 % 10 = 2 So 119193-87-2 is a valid CAS Registry Number.
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