The CAS Registry Mumber 53756-38-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,3,7,5 and 6 respectively; the second part has 2 digits, 3 and 8 respectively. Calculate Digit Verification of CAS Registry Number 53756-38: (7*5)+(6*3)+(5*7)+(4*5)+(3*6)+(2*3)+(1*8)=140 140 % 10 = 0 So 53756-38-0 is a valid CAS Registry Number.
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