The CAS Registry Mumber 61570-06-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,1,5,7 and 0 respectively; the second part has 2 digits, 0 and 6 respectively. Calculate Digit Verification of CAS Registry Number 61570-06: (7*6)+(6*1)+(5*5)+(4*7)+(3*0)+(2*0)+(1*6)=107 107 % 10 = 7 So 61570-06-7 is a valid CAS Registry Number.
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