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Questions related from Md. Shahinozzaman
Can anyone tell me how to search AIST database with proton/carbon NMR chemical shifts? Before I tried, but in the long run failed to get the suggested chemical structure. Your cooperation would...
30 October 2017 9,326 3 View
I have collected one active fraction from Si-gel CC using Hexane:EtOAc gradient. The active fraction eluted with 3:2 ratio. Now its time to purify the active compounds from this fraction. TLC...
22 September 2017 1,774 6 View
I would like to elucidate chemical structure of an unknown sample using proton-NMR, Carbon-NMR, 2D-NMR and Mass spectrum Data. Can anybody suggest me how to do this and what type of references I...
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I am using Nicotinic acid for synthesizing some ester derivatives. I am using EDC/DMAP/DMF. Whenever I tried to purify the ester from reaction mixer with EtOAc or EtOAc-Hexane solvents...
14 August 2017 2,961 7 View
I would like to isolate more polar compound from the extract. In this regard, I am supposed to use HPLC for successful isolation of the compound (s). Can you please suggest me the procedure for...
15 August 2016 1,710 4 View
I use different cancer cells to expound Bioactivites of the isolated/target compounds. I dissolve the compounds in 100% DMSO, and I also use 24-well plate. In each well, I put 1 mL cell...
29 July 2016 1,177 1 View