The CAS Registry Mumber 19146-62-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,1,4 and 6 respectively; the second part has 2 digits, 6 and 2 respectively. Calculate Digit Verification of CAS Registry Number 19146-62: (7*1)+(6*9)+(5*1)+(4*4)+(3*6)+(2*6)+(1*2)=114 114 % 10 = 4 So 19146-62-4 is a valid CAS Registry Number.
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