CAS DataBase Reference: 1H, 3H-Benzo[1,2-c:4,5-c']difuran-1,3,5,7-tetrone polymer with 3,3'-[[1,1'-bisphenyl]-4,4'-diylbis(oxy)bis[benzenamine](CAS DataBase Reference)
NIST Chemistry Reference: 1H, 3H-Benzo[1,2-c:4,5-c']difuran-1,3,5,7-tetrone polymer with 3,3'-[[1,1'-bisphenyl]-4,4'-diylbis(oxy)bis[benzenamine](105218-97-1)
EPA Substance Registry System: 1H, 3H-Benzo[1,2-c:4,5-c']difuran-1,3,5,7-tetrone polymer with 3,3'-[[1,1'-bisphenyl]-4,4'-diylbis(oxy)bis[benzenamine](105218-97-1)
The CAS Registry Mumber 105218-97-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,5,2,1 and 8 respectively; the second part has 2 digits, 9 and 7 respectively. Calculate Digit Verification of CAS Registry Number 105218-97: (8*1)+(7*0)+(6*5)+(5*2)+(4*1)+(3*8)+(2*9)+(1*7)=101 101 % 10 = 1 So 105218-97-1 is a valid CAS Registry Number.
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