How to determine the optical rotation of a molecule that consist 1 chiral carbon?

How to know the wavelength that i should use to measure the optical rotation? What is the difference between optical rotation and optical ellipticity? thanks

02 March 2016 3,067 7 View

Can someone help with Glucomoringin extraction and purification?

10 November 2015 7,584 4 View

Is it possible for MTT result to not be time dependent?

08 September 2015 8,826 4 View

Is there anyone working with prostate cancer cell lines in a Malaysian university?

Prostate cancer cell lines in local university. I really need to find those cell lines. thanks

07 August 2015 6,295 3 View

Can anyone help with impurities in purified glucosinolates?

I had purify glucosinolates from seed of plant. But when i do NMR, the result showed impurities in 0-2.5 ppm. How can i solved this issue?

05 June 2015 1,737 5 View

What to do when compound did not dissolve in organic solvent?

03 April 2015 5,007 6 View

Any suggestions on thin layer chromatography and column chromatography?

i had done tlc for my crude extract as it has been suggested by sv to check the compound and solvent system. i had found only 1 spot for my crude and the best solvent system. my desired pure...

02 March 2015 8,964 17 View

Why do some people perceive the orchid as beautiful or attractive?

Why do people spending a lot of money for buying orchid? What are the characteristics of beautiful or characteristics of marketable orchids?

02 March 2014 5,512 1 View

What is the best procedure for pineapple culture n36?

We tried to culture pineapple n36 for some months, but still have fungus contamination. Any suggestion for sterilization techniques?

06 July 2013 8,339 5 View

EDC chemical handling?

I have to use the EDC chemical for my project. I have never used it before, I 'd read on the label for storage condition which stated that it can only be freshly use. Does it mean that I can't...

04 May 2013 3,934 3 View

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 August 2021 0 0 View

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 August 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 2021 0 0 View

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 March 2021 0 0 View

Chlorinated organic formation in odor control scrubbers using hypochlorite?

I'm involved in a study of odor control technologies for municipal wastewater treatment plant. One of the control options involves a chemical 2-stage (acid/alkaline) packed bed scrubber. The...

03 March 2021 3,661 2 View

How do I determine the degree of polymerization of PEG 400 based on NMR integration?

Hello, I am working on the photocatalytic degradation of PEG 400. I would like to know if it's possible to determine the degree on polymerization based on NMR integration, or by the MW of the...

02 March 2021 6,186 3 View