The CAS Registry Mumber 537038-62-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,3,7,0,3 and 8 respectively; the second part has 2 digits, 6 and 2 respectively. Calculate Digit Verification of CAS Registry Number 537038-62: (8*5)+(7*3)+(6*7)+(5*0)+(4*3)+(3*8)+(2*6)+(1*2)=153 153 % 10 = 3 So 537038-62-3 is a valid CAS Registry Number.
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