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57139-40-9

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57139-40-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57139-40-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,1,3 and 9 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 57139-40:
(7*5)+(6*7)+(5*1)+(4*3)+(3*9)+(2*4)+(1*0)=129
129 % 10 = 9
So 57139-40-9 is a valid CAS Registry Number.

57139-40-9Relevant articles and documents

Stereospecific Suzuki, Sonogashira, and Negishi coupling reactions of N-alkoxyimidoyl iodides and bromides

Dolliver, Debra D.,Bhattarai, Bijay T.,Pandey, Arjun,Lanier, Megan L.,Bordelon, Amber S.,Adhikari, Sarju,Dinser, Jordan A.,Flowers, Patrick F.,Wills, Veronica S.,Schneider, Caroline L.,Shaughnessy, Kevin H.,Moore, Jane N.,Raders, Steven M.,Snowden, Timothy S.,McKim, Artie S.,Fronczek, Frank R.

, p. 3676 - 3687 (2013/06/04)

A high-yielding stereospecific route to the synthesis of single geometric isomers of diaryl oxime ethers through Suzuki coupling of N-alkoxyimidoyl iodides is described. This reaction occurs with complete retention of the imidoyl halide geometry to give single E- or Z-isomers of diaryl oxime ethers. The Sonogashira coupling of N-alkoxyimidoyl iodides and bromides with a wide variety of terminal alkynes to afford single geometric isomers of aryl alkynyl oxime ethers has also been developed. Several of these reactions proceed through copper-free conditions. The Negishi coupling of N-alkoxyimidoyl halides is introduced. The E and Z configurations of nine Suzuki-coupling products and two Sonogashira-coupling products were confirmed by X-ray crystallography.

Mechanism of Solvolysis Reactions of O-Methylbenzohydroximoyl Halides. Stereoelectronic Control in Formation of and Nucleophilic Addition to Nitrilium Ions

Johnson, James E.,Cornell, Sravanthi C.

, p. 4144 - 4148 (2007/10/02)

The hydrolysis reactions of the Z and E isomers of O-methylbenzohydroximoyl chloride (3a and 2, respectively) have been investigated. The first-order rate constant for the hydrolysis of 3a (1) shows common-ion rate depression, (2) decreases with decreasin

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