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Questions related from Yasser Fakri Mustafa
One of the most valuable properties that allows the 1H-NMR spectrum to give structural information is spin-spin coupling, which is caused by spin coupling between hydrogen nuclei that are not...
26 February 2022 6,354 4 View
Dear RG members The indexing of a published article in the Scopus database may depend on several factors. The issue is that my colleague and I have published separately two articles in the same...
17 December 2020 4,619 19 View
Dear RG members I design to carry out Bargellini reaction on certain phenol. In this reaction, the first step involves the reaction between NaOH and chloroform. I try to dissolve the first reagent...
24 October 2020 3,250 6 View
Dear RG members I prepared coumarin derivative by reacting phenolic compound and ethyl acetoacetate via Pechmann condensation reaction. In the first trial, the physical appearance of the product...
13 October 2020 7,086 36 View
Dear RG members The analysis of the mass spectrum of an organic compound is not an easy task and needs high expertise. Is there any free software that can facilitate the prediction of the...
05 August 2020 8,250 15 View
Dear RG members The aim of the anti-aging products is to live with a healthy life rather than normal life. So, Can anyone provide the classification of these products based on their mechanism of...
04 August 2020 2,276 40 View
Dear RG members According to my institution, publishing in a journal that is predatory by itself or its publisher is a big mistake. So, what is the robust identifier that differentiates between...
01 August 2020 6,803 94 View
Dear RG members To increase the visibility of the work, the researcher aims to add it in more than one scientific media platforms. One of them is the Semantic Scholar. I try to add my recent...
20 July 2020 7,074 51 View
Dear RG members What is your opinion about the updated CiteScore methodology applied by Scopus for the calculation of the CiteScore of 2019? Are you with this new methodology or not? Is this...
30 June 2020 7,890 6 View
Dear all.... As a researcher in the field of pharmaceutical chemistry, the most important obstacles which may be faced are the availability of the chemical reagents and the cost of the chemical...
22 June 2020 9,837 98 View
In the synthesis of certain 7-hydroxycoumarin conjugated by an amide bond with 5-fluorouracil, the used solvent (DMSO) has distilled off under reduced pressure. The product was still sticky and...
16 June 2020 9,723 20 View
Dear all In the SN1 reactions, which one is the strongest nucleophile: methanol or ethanol? And why?
06 June 2020 2,362 20 View
Since many phytochemicals can dissolve in many solvents of different polarities based on their chemical structures, what is the best solvent or solvent mixture for extracting flavonoids from a...
25 May 2020 4,673 78 View
Which is the best solvent to extract natural coumarins from their natural sources? The extraction method I decided to employed is the microwave-aided technique.
21 April 2020 9,416 23 View
In the reaction between salicylic acid and methanol in the presence of concentrated HCl via Fischer esterification reaction, the currently applied procedure involves the use of an excess amount of...
14 April 2020 6,105 13 View
When your right is digested concerning any issue of normal life, you turn to the police and the court. From this point, I have the following concern. When an indexed journal accepts the...
01 January 1970 6,111 11 View
