The CAS Registry Mumber 83059-59-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,0,5 and 9 respectively; the second part has 2 digits, 5 and 9 respectively. Calculate Digit Verification of CAS Registry Number 83059-59: (7*8)+(6*3)+(5*0)+(4*5)+(3*9)+(2*5)+(1*9)=140 140 % 10 = 0 So 83059-59-0 is a valid CAS Registry Number.
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