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138647-53-7

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138647-53-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138647-53-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,6,4 and 7 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 138647-53:
(8*1)+(7*3)+(6*8)+(5*6)+(4*4)+(3*7)+(2*5)+(1*3)=157
157 % 10 = 7
So 138647-53-7 is a valid CAS Registry Number.

138647-53-7Relevant articles and documents

20-HETE FORMATION INHIBITORS

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Paragraph 0257-0260; 0273; 0274, (2020/08/23)

This disclosure provides novel heterocyclic compounds and methods for inhibiting the enzyme CYP4. Further disclosed methods include: a method of inhibiting the biosynthesis of 20-hydroxyeicosatetraenoic acid (20-HETE) in a subject in need thereof and a method of producing neuroprotection and decreased brain damage by preventing cerebral microvascular blood flow impairment and anti-oxidant mechanisms in a subject experiencing or having experienced an ischemic event.

Preparation method of para-substituted aryl compound

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, (2020/06/09)

The invention discloses a preparation method of a para-substituted aryl compound shown as a formula (I) which is described in the specfication. The preparation method is characterized by comprising the following step of: subjecting an aryl sulfonium salt shown as a formula (II) which is described in the specfication and boride to a coupling reaction in a solvent in an inert atmosphere under the action of alkali and a palladium catalyst to obtain the para-substituted aryl compound. According to the method, mono-substituted aromatic hydrocarbon is taken as a substrate, the aryl sulfonium salt isconstructed in situ, and the palladium catalyst catalyzes the aryl sulfonium salt constructed in situ to undergo the Suzuki-Miyaura coupling reaction, so a mono-substituted aromatic hydrocarbon para-arylation or alkenylation product is constructed quickly and efficiently. The method is mild in conditions, high in substrate universality and wide in tolerance of a heterocyclic coupling substrate.

Dimethylisosorbide (DMI) as a Bio-Derived Solvent for Pd-Catalyzed Cross-Coupling Reactions

Wilson, Kirsty L.,Murray, Jane,Sneddon, Helen F.,Jamieson, Craig,Watson, Allan J. B.

supporting information, p. 2293 - 2297 (2018/10/20)

Palladium-catalyzed bond-forming reactions, such as the ?-Suzuki-Miyaura and Mizoroki-Heck reactions, are some of the most broadly utilized reactions within the chemical industry. These reactions frequently employ hazardous solvents; however, to adhere to increasing sustainability pressures and restrictions regarding the use of such solvents, alternatives are highly sought after. Here we demonstrate the utility of dimethyl isosorbide (DMI) as a bio-derived solvent in several benchmark Pd-catalyzed reactions: Suzuki-Miyaura (13 examples, 62-100% yield), Mizoroki-Heck (13 examples, 47-91% yield), and Sonogashira (12 examples, 65-98% yield).

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