The CAS Registry Mumber 5370-14-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,3,7 and 0 respectively; the second part has 2 digits, 1 and 4 respectively. Calculate Digit Verification of CAS Registry Number 5370-14: (6*5)+(5*3)+(4*7)+(3*0)+(2*1)+(1*4)=79 79 % 10 = 9 So 5370-14-9 is a valid CAS Registry Number.
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