The CAS Registry Mumber 130697-04-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,0,6,9 and 7 respectively; the second part has 2 digits, 0 and 4 respectively. Calculate Digit Verification of CAS Registry Number 130697-04: (8*1)+(7*3)+(6*0)+(5*6)+(4*9)+(3*7)+(2*0)+(1*4)=120 120 % 10 = 0 So 130697-04-0 is a valid CAS Registry Number.
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