The CAS Registry Mumber 70248-14-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,0,2,4 and 8 respectively; the second part has 2 digits, 1 and 4 respectively. Calculate Digit Verification of CAS Registry Number 70248-14: (7*7)+(6*0)+(5*2)+(4*4)+(3*8)+(2*1)+(1*4)=105 105 % 10 = 5 So 70248-14-5 is a valid CAS Registry Number.
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