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139013-57-3

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139013-57-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139013-57-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,0,1 and 3 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 139013-57:
(8*1)+(7*3)+(6*9)+(5*0)+(4*1)+(3*3)+(2*5)+(1*7)=113
113 % 10 = 3
So 139013-57-3 is a valid CAS Registry Number.

139013-57-3Relevant articles and documents

Polystyrene-supported N-methylthiourea: A convenient new reagent for the hydrogenolysis of bicyclic endoperoxides

Spivey, Alan C.,Manas, Carles Giro,Mann, Inderjit

, p. 4426 - 4428 (2005)

The single-step preparation of a polystyrene-bound N-methylthiourea 4 and its use for the hydrogenolysis of bicyclic endoperoxides is described. The Royal Society of Chemistry 2005.

Microbial Oxidation of Aromatics in Enantiocontrolled Synthesis. Part 1.Expedient and General Asymmetric Synthesis of Inositols and Carbohydrates via and Unusual Oxidation of a Polarized Diene with Potassium Permanganate

Hudlicky, Tomas,Mandel, Martin,Rouden, Jacques,Lee, Robert S.,Bachmann, Bryan,et al.

, p. 1553 - 1568 (2007/10/02)

This paper reports on the details of a general design of carbohydrates and cyclitols from biocatalytically derived synthons.Homochiral 1-halogenocyclohexa-4,6-diene-2,3-diols 1a and 1b have been generated from chloro- and bromobenzene, respectively, by means of bacterial dioxygenase of Pseudomonas putida 39D.These chiral synthons have been manipulated to cyclitols and carbohydrates by further stereoselective functionalizations.The preperation of D-chiro-inositol, neo-inositol, muco-inositol, and allo-inositol exemplifies their use in enantiocontrolled synthesis.A novel oxidation of polarized dienes with KMnO4 resulted in the synthesis of α-halogeno epoxy diols, which proved unexpectedly stable.A mechanism is proposed for this transformation and placed in context with the only four reported examples of this reaction in the literature.In addition to the application of this new chemistry to the synthesis of cyclitols, chloro epoxy diol 21a has been transformed into a series of cyclitol synthons by reductive or hydrolytic operations.Reaction of 21a with ammonia led to the preparation of highly oxygenated pyrazines, whose structure were proven by X-ray crystallography.The use of 21a in the preparation of D-chiro-3-inosose, a hitherto unreported cyclitol derivative, is also reported.In addition, chloro epoxy diol 21a was transformed into D-erythruronolactone, completing the synthesis of this important chiral pool reagent in two operations from chlorobenzene.Oxidative cleavage of tetrol 20 yielded D-mannosolactone identical with an authentic sample.

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