The CAS Registry Mumber 1054654-18-0 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,5,4,6,5 and 4 respectively; the second part has 2 digits, 1 and 8 respectively. Calculate Digit Verification of CAS Registry Number 1054654-18: (9*1)+(8*0)+(7*5)+(6*4)+(5*6)+(4*5)+(3*4)+(2*1)+(1*8)=140 140 % 10 = 0 So 1054654-18-0 is a valid CAS Registry Number.
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