Zakaria Rachid

7 Questions 23 Answers 0 Followers

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Quantification of Menadione nicotinamide bisulphite by HPLC?

HI, Is there any method by HPLC capable to quantify Menadione nicotinamide bisulphite Thank you

01 January 2016 8,775 2 View

Are you familiar with Quantification of diphenhydramine hydrochloride by HPLC?

Dear Members. For the quantification of diphenhydramine hydrochloride (pka = 9). I use column C18 with mobile phase Acetonitrile/Water (50/50) (pH around 5_, I got a pic with a tailing. But when i...

06 June 2015 5,068 9 View

Can THF as mobile phase damage the HPLC system?

I would like to use THF as mobile phase and I am wondering if THF damage the HPLC system. Many thanks.

04 April 2015 9,052 9 View

Does rinsing the XBridge BEH C8 column with a mixture of methanol/water (pH = 2) affect its efficiency?

Sincerely yours.

03 March 2015 4,985 2 View

What is the role of sodium sulfate in the mobile phase?

Hello, To determine betaine by HPLC RP C18, the MOP is buffer with sodium hexane sulfonate (Pic B6) and sodium sulfate. I would like to know the role of sodium sulfate. Many thanks.

11 November 2014 3,516 7 View

Could I have the HPLC conditions to quantify the Ostarine?

See above

07 July 2014 5,961 1 View

Does anyone know the HPLC conditions to quantify the Ostarine?

Many Thanks.

07 July 2014 7,921 0 View