Noha G Mohamed

9 Questions 10 Answers 0 Followers

Questions related from Noha G Mohamed

What is the role of sodium acetate in acetylation of primary amine with acetic anhydride?

i want know the role of sodium acetate in the acetylation of primary aromatic amine using acetic anhydride. the reaction mechanism doesn't explain it.

05 May 2021 9,740 5 View

How can i make docking of two proteins using Autodock ?

I want to make docking using Autodock and both receptor and ligand are proteins. i followed the usual steps of docking small molecule ligand but when I reach to docking step, an error message says...

31 July 2020 4,041 9 View

What is the best free program for the analysis of H-NMR spectrum?

I need a free program to analyze H-NMR spectrum. Any recommendations?

30 May 2020 1,648 2 View

What is the use of "set up covalent map" option in docking with autodock and how to choose the correct atom?

Hello All im trying to make docking using autodock and i have two questions 1 - i want know what is the use of "set up covalent map" option and how i select the proper atom? 2 - when i compare...

18 September 2018 4,891 0 View

The autogrid step in Autodock 4.2.3 is not working and shows an error message. How can i overcome this?

Hello im trying to make docking with autodock 4.2.3 and the autogrid command always show error message saying ( C:\Windows\system32\autogrid4.exe: ERROR: Grid data file needs the extension...

17 April 2018 8,101 10 View

When should i use Rigid Protein Docking and when i use Induced Fit Docking?

Rigid protein docking deals with the protein / receptor as rigid structure while in induced fit docking receptor sidechains are allowed to flex during refinement of the poses when should i use...

15 December 2017 6,688 2 View

How can I synthesize of amino triazole?

Im trying to synthesize naphthyridinyl amino triazole from naphthyridinyl hydrazide by reaction with S-methylisothiourea sulfate and sodium hydroxide but the preciptated product have same RF of...

27 July 2014 9,870 3 View

How can I separate nalidixic acid methyl ester from a mixture containing ester and acid (Nalidixic acid)?

The mixture contains nalidixic acid dissolved in chloroform then triethylamine and ethyl chloroformate were added and stirred for 30 minutes. Methanol was added to synthesize methyl ester. How to...

11 February 2013 3,146 8 View

How can i differentiate between E and Z isomers of imine?

i synthesized aromatic schiff base from 3-aryl-5-amino 1,2,4-triazol. How can i know it is E or Z using another tool than X ray crystallography.

01 January 1970 3,126 6 View