The CAS Registry Mumber 67924-36-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,7,9,2 and 4 respectively; the second part has 2 digits, 3 and 6 respectively. Calculate Digit Verification of CAS Registry Number 67924-36: (7*6)+(6*7)+(5*9)+(4*2)+(3*4)+(2*3)+(1*6)=161 161 % 10 = 1 So 67924-36-1 is a valid CAS Registry Number.
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