140457-98-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 140457-98-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,0,4,5 and 7 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 140457-98:
(8*1)+(7*4)+(6*0)+(5*4)+(4*5)+(3*7)+(2*9)+(1*8)=123
123 % 10 = 3
So 140457-98-3 is a valid CAS Registry Number.
140457-98-3Relevant articles and documents
α,α,ω-TRIHYDRO-α-HALOPERFLUOROALKANES
Shilin, S. V.,Florensova, O. N.,Chernov, N. F.,Voronkov, M. G.
, p. 1697 - 1699 (2007/10/02)
A synthesis has been developed for α,α,ω-trihydrohaloperfluoroalkanes, H(CF2CF2)n*CH2X, where X is Cl or Br and n is 1 or 4.It is based on the cleavage of the aromatic sulfonate esters of α,α,ω-trihydroperfluoroalkan-α-ols by alkali metal halides.
