The CAS Registry Mumber 77363-69-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,3,6 and 3 respectively; the second part has 2 digits, 6 and 9 respectively. Calculate Digit Verification of CAS Registry Number 77363-69: (7*7)+(6*7)+(5*3)+(4*6)+(3*3)+(2*6)+(1*9)=160 160 % 10 = 0 So 77363-69-0 is a valid CAS Registry Number.
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