Marcus Binner

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Questions related from Marcus Binner

[solved] Can you explain a +44 mass difference in peptide synthesis?

Dear experts, after peptide synthesis (standard Fmoc chemistry, no acetylation between the couplings), I have a significant peak next to my main product for analytical reverse phase HPLC (see...

21 December 2018 947 7 View

Can you help me finding a list of transparent polymers suitable for light microscopy including refractive index?

We develop medical devices for characterization of thin tissues which should be produced from plastic/polymers (wall thickness

30 September 2018 5,532 8 View

HPLC-ESI MS analysis of Coenzyme A, Malonyl-CoA, and ATP?

Hi all, we run our HPLC (Agilent 1100 series) usually with C18 or C8 columns, using acetonitrile/water gradient with 0.1 % HCOOH. We have a DAD detector and can attach the HPLC outlet directly to...

08 March 2017 2,245 3 View

How to determine oxygen amount / composition of a gas sample?

Hi, we recently had problems with some syntheses where we use nitrogen flow to remove a byproduct (tBu-SH) from a reduction reaction from a reaction mixture. The educt is a StBu-protected peptide...

18 January 2016 2,511 4 View