The CAS Registry Mumber 14930-21-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,4,9,3 and 0 respectively; the second part has 2 digits, 2 and 1 respectively. Calculate Digit Verification of CAS Registry Number 14930-21: (7*1)+(6*4)+(5*9)+(4*3)+(3*0)+(2*2)+(1*1)=93 93 % 10 = 3 So 14930-21-3 is a valid CAS Registry Number.
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