The CAS Registry Mumber 67392-49-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,7,3,9 and 2 respectively; the second part has 2 digits, 4 and 9 respectively. Calculate Digit Verification of CAS Registry Number 67392-49: (7*6)+(6*7)+(5*3)+(4*9)+(3*2)+(2*4)+(1*9)=158 158 % 10 = 8 So 67392-49-8 is a valid CAS Registry Number.
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