The CAS Registry Mumber 53772-35-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,3,7,7 and 2 respectively; the second part has 2 digits, 3 and 5 respectively. Calculate Digit Verification of CAS Registry Number 53772-35: (7*5)+(6*3)+(5*7)+(4*7)+(3*2)+(2*3)+(1*5)=133 133 % 10 = 3 So 53772-35-3 is a valid CAS Registry Number.
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