Mahdi Yahyazadeh

5 Questions 48 Answers 0 Followers

Questions related from Mahdi Yahyazadeh

How pharmaceutical company separate medicinal alkaloids in big scale?

There are several standards of alkaloids in a company such as sigma with low price. using Chromatography system such as Preparative-HPLC can increase the price of final product. therefore, they...

06 June 2018 8,677 2 View

Is there any correlation between gene expression and protein synthesis?

I am doing qRT-PCR. I would appreciate if any person tell whether the result of qRT-PCR is an indicator for level of protein synthesis.

04 April 2018 5,407 2 View

Does anyone know where can I download LC-MS libraries?

I am looking for characterization of some unknown components probably alkaloid that were extracted from Catharanthus roseus.

03 March 2018 9,392 0 View

What is the reproducibility of counter current chromatography (CCC)?

CCC is a preparative method, but I would like to know whether every run likes HPLC have the same retention time or not?

02 February 2018 9,358 1 View

Where can I find a full library of alkaloid analyzed by LC-MS?

I analyzed C. roseus plant extract by LC-MS. I found some unknown peak that I could not find any comparable fragmentation in literature for them. They should probably be alkaloids? How can I...

02 February 2018 2,481 0 View