The CAS Registry Mumber 4730-75-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,7,3 and 0 respectively; the second part has 2 digits, 7 and 5 respectively. Calculate Digit Verification of CAS Registry Number 4730-75: (6*4)+(5*7)+(4*3)+(3*0)+(2*7)+(1*5)=90 90 % 10 = 0 So 4730-75-0 is a valid CAS Registry Number.
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