The CAS Registry Mumber 14306-50-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,4,3,0 and 6 respectively; the second part has 2 digits, 5 and 0 respectively. Calculate Digit Verification of CAS Registry Number 14306-50: (7*1)+(6*4)+(5*3)+(4*0)+(3*6)+(2*5)+(1*0)=74 74 % 10 = 4 So 14306-50-4 is a valid CAS Registry Number.
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