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143337-13-7

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143337-13-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 143337-13-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,3,3 and 7 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 143337-13:
(8*1)+(7*4)+(6*3)+(5*3)+(4*3)+(3*7)+(2*1)+(1*3)=107
107 % 10 = 7
So 143337-13-7 is a valid CAS Registry Number.

143337-13-7Downstream Products

143337-13-7Relevant articles and documents

Synthesis and Characterization of Mono- and Tri-nuclear Ruthenium Complexes of 2,2'-Bis(diphenylphosphino)-1,1'-binaphthyl and Their Catalytic Activity

Mashima, Kazushi,Hino, Takahiro,Takaya, Hidemasa

, p. 2099 - 2108 (2007/10/02)

The structures of ruthenium(II) complexes formed in solution from Y (S)-3 (X, Y = halide and/or BF4-; binap = 2,2'-bis(diphenylphosphino)-1,1'-binaphthyl; arene = benzene or p-cymene) depend on the solvent.In acetonitrile-methanol (1:1) dicationic complexes X(Y) (S)-4 (X = Y = Cl a; X = Cl, Y = BF4 b; X = Y = Br c; or X = Y = I d) are predominantly formed, while monocationic species X (S)-6 (X = Cl a, Br b or I c) were observed in acetonitrile.These mono- and di-cationic species could not be isolated pure, while (S)-5 was isolated from (S)-4a or (S)-6a upon concentration of the reaction mixture.In methanol without donor molecules such as acetonitrile, cationic trinuclear complexes Y (S)-7 (X = Y = Cl a; X = Cl, Y = BF4 b or X = Y = Br c) were exclusively formed by heating at 60 deg C or UV irradiation of a solution of (S)-3.The structure of (S)-7 was characterized by spectral data and an X-ray crystallographic analysis of (S)-7b 12121, a = 26.328(5), b = 18.140(3), c = 26.374(4), Z = 4, R'= 0.083>.The relationship between the structure of the RuII(binap) complexes and their catalytic activities for asymmetric hydrogenation of methyl 3-oxobutanoate has been investigated.

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