The CAS Registry Mumber 194343-80-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,4,3,4 and 3 respectively; the second part has 2 digits, 8 and 0 respectively. Calculate Digit Verification of CAS Registry Number 194343-80: (8*1)+(7*9)+(6*4)+(5*3)+(4*4)+(3*3)+(2*8)+(1*0)=151 151 % 10 = 1 So 194343-80-1 is a valid CAS Registry Number.
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1,1,2,2-tetrafluoro-2-[1,1,2,2-tetrafluoro-4-(trichlorosilyl)butoxy]-