Thai Leong Lai

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Questions related from Thai Leong Lai

Are you aware of any enzymes that prefer dicarboxylic acids as substrate as compared to their monocarboxylic acid counterparts?

For example, enzymes that prefer terephthalic acid (dicarboxylic acid) as the substrate and less so (or no activity at all) with benzoic acid (monocarboxylic acid).

03 May 2025 1,510 2 View

Are there any resins that can preferentially adsorb dicarboxylic acids when being added to mixture of both mono- and dicarboxylic acids?

For example, resins that selectively adsorb/bind terephthalic acid (dicarboxylic acid) when being added to a mixture of benzoic acid (monocarboxylic acid) and terephthalic acid.

03 May 2025 8,726 1 View

Are there any assays that can selectively detect dicarboxylic acids while ignoring monocarboxylic acid counterparts, vice versa?

For example, the assays would detect terephthalic acid and not benzoic acid. Vice versa.

03 May 2025 6,940 1 View

Without distillation, is there any way to selectively remove a dicarboxylic acid from its mixture with monocarboxylic acid?

Basically the dicarboxylic acid is a product of reaction.

27 March 2025 2,391 1 View

How would the polarity of carboxylate/carboxylic acid change with the addition of quaternary amine salts?

I wonder whether it would cause a change in retention time when running HPLC

23 March 2025 5,608 1 View

Request for help in processing HPLC data (batch processing if possible)?

Hi, I am collecting RP-HPLC data using Shimadzu Labsolutions Version 5.71 SP1. Every time I do the postrun PDA analysis, I have to manually remove unwanted peaks, e g. below retention time=4.5...

19 March 2025 3,758 7 View