The CAS Registry Mumber 1185143-75-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,8,5,1,4 and 3 respectively; the second part has 2 digits, 7 and 5 respectively. Calculate Digit Verification of CAS Registry Number 1185143-75: (9*1)+(8*1)+(7*8)+(6*5)+(5*1)+(4*4)+(3*3)+(2*7)+(1*5)=152 152 % 10 = 2 So 1185143-75-2 is a valid CAS Registry Number.
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