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57956-39-5

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57956-39-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57956-39-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,9,5 and 6 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 57956-39:
(7*5)+(6*7)+(5*9)+(4*5)+(3*6)+(2*3)+(1*9)=175
175 % 10 = 5
So 57956-39-5 is a valid CAS Registry Number.

57956-39-5Relevant articles and documents

Photoaddition reactions of acetylpyridines with silyl ketene acetals: SET vs [2 + 2]-cycloaddition pathways

Cho, Dae Won,Park, Hea Jung,Yoon, Ung Chan,Lee, Hyang-Yeol,Mariano, Patrick S.

, p. 10304 - 10313 (2013/01/15)

Photoaddition reactions of silyl ketene acetals with 2-, 3- and 4-acetylpyridine have been explored. The results show that the acetylpyridines react with an electron rich, dimethyl-substituted silyl ketene acetal via a pathway in which excited state singl

Catalytic enantioselective intermolecular reductive aldol reaction to ketones

Zhao, Dongbo,Oisaki, Kounosuke,Kanai, Motomu,Shibasaki, Masakatsu

, p. 1403 - 1407 (2007/10/03)

We describe the first example of a catalytic enantioselective intermolecular reductive aldol reaction. Three types of reactions were studied: (1) reactions between acetophenone and methyl acrylate; (2) reactions between symmetric ketones and β-substituted

Iron-mediated electrochemical reaction of α-chloroesters with carbonyl compounds

Durandetti, Muriel,Meignein, Clothilde,Perichon, Jacques

, p. 317 - 320 (2007/10/03)

(Matrix presented) Reformatsky-type reactions have been performed efficiently using an electroassisted iron-complex catalysis. Valuable product such as β-hydroxyesters, ketones or nitriles are thus prepared with high yields.

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