The CAS Registry Mumber 758697-70-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,5,8,6,9 and 7 respectively; the second part has 2 digits, 7 and 0 respectively. Calculate Digit Verification of CAS Registry Number 758697-70: (8*7)+(7*5)+(6*8)+(5*6)+(4*9)+(3*7)+(2*7)+(1*0)=240 240 % 10 = 0 So 758697-70-0 is a valid CAS Registry Number.
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