The CAS Registry Mumber 1026157-60-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,2,6,1,5 and 7 respectively; the second part has 2 digits, 6 and 0 respectively. Calculate Digit Verification of CAS Registry Number 1026157-60: (9*1)+(8*0)+(7*2)+(6*6)+(5*1)+(4*5)+(3*7)+(2*6)+(1*0)=117 117 % 10 = 7 So 1026157-60-7 is a valid CAS Registry Number.
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