Cl and azide linked to n-hydroxyphthalimide
:) Thank you so much. Since I couldn't find any solution I carried out the water extraction and NMR showed peaks for Cl product. So I'm going to add some azide again. Thank you for your advice.
I am using Sodium azide/ DMF at 55 C overnight as my reaction conditions. Do you think this is good enough ?
I am new to CRISPR Knock In. I want to clone a gene into ROSA 26 donor plasmid to Knock In a gene into the mouse genome. I have selected the addgene plasmid # 74285. But I cannot figure out where...
09 October 2019 9,551 1 View
I wanted to knock out MSH2 in mice cell line CH12F3 and after gRNA construction, transfection and single cell sorting, I got single colonies. I used two guide RNAs to give a deletion but when I...
04 May 2019 8,071 6 View
for recombinant proteins do we have to use specific antibodies?
03 April 2019 9,791 3 View
I am struggling to amplify an 7.4 kB fragment which I need to confirm my CRISPR KO. I have tried Pfu and Phusion polymerase, used both HF and GC buffers, tried 50 - 70 C temp gradient, DMSO...
02 March 2019 1,401 4 View
What is the database I should select under the Primer Pair specificity parameters in NCBI primer design tool?
02 March 2019 7,055 2 View
I do slot blotting to my DNA samples that contain Carboxy rhodamine tags and then scan through typhoon (CY2) to get the signal intensity. Unfortunately membrane looks terrible and I cannot...
01 January 1970 2,877 0 View
I need to purify DBCO CY5 since it give lots of unwanted bands when run on PAGE. I am looking for a protocol for that.
01 January 1970 280 5 View
One of the compounds that we synthesized in our lab can result in replication fork collapse. We have tested for gmma H2AX foci that shows the ds strand breaks. But we need to test for the...
01 January 1970 6,431 0 View
When I run my 17mer DNA oligos on PAGE gel I can see a smear above my DNA band. Does anyone know a possible reason or how to minimize this? I have attached a gel image here as well. Thank you
01 January 1970 928 4 View
what is the most reasonable mechanism for hydrothiolation of terminal alkynes?
01 January 1970 7,739 0 View
I need to do some experiment with it in liquid form.
07 August 2024 613 3 View
I work on MCF7 cell cell for anticaner purpose and I wa to do drug preperation the drug ( secondary metabolites extracted from Aspergillus) My question which solvent is better with these secodary...
03 August 2024 4,725 2 View
I imagine the battery drives the graphite into a carbocation, then chloride is oxidized to donate the electron to the carbocation, but what pushes the lost electrons of chloride to be shared...
03 August 2024 5,384 0 View
Hello everyone, I need to dissolve stigmasterol for an animal experiment, but it hasn't dissolved in either DMSO or vegetable oil. Can anyone recommend the best solvent for stigmasterol?
01 August 2024 7,504 2 View
Hello everyone, A collaborator sent us his protocol in order to be able to use his immunohistochemistry kits. But one step contains PBS + 0.3% H2O2 + 0.1% sodium azide. Knowing the dangerousness...
23 July 2024 6,314 3 View
Why methanol and sulphuric acid, used in the analysis of polyhydroxyalkanoates (PHA) methyl esters by GC-MS? Additionally, why do we typically use non-polar solvents in GC-MS?
22 July 2024 1,210 2 View
Is it the best optimization ratio based on experiments?
22 July 2024 8,170 0 View
If you don't understand my question let me know
21 July 2024 563 1 View
I used several solvents and measured the absorbency and determined the total phenolic content, but the results were similar after dropping them on the titration curve; What is the reason, please help
17 July 2024 5,151 5 View
Hello everyone, I am facing a consistent issue in my NMR spectra with an unwanted peak appearing at 1.25 ppm. This peak seems to vary with the amount of sample: it becomes more pronounced with...
15 July 2024 9,065 4 View