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Does a TFA mobile phase change the purity number I get for dulaglutide on a C4 column?

Asked 3 Dec 2025Modified 8 months agoViewed 1.8k times
3

Details up front: a TFA mobile phase · dulaglutide · a C4 column.

I suspect the usual explanation for this is wrong, or at least incomplete.

I am aware this may have a boring answer. I would still like the boring answer stated clearly.

Can someone derive this rather than assert it?

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Reverse-phase high-performance liquid chromatography, the workhorse purity method. Column chemistry, mobile-phase choice, gradient slope,…

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Certified reference materials and in-house standards: traceability, the certificate of the standard itself, system suitability, and why every…

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A once-weekly GLP-1 receptor agonist built on an Fc fusion rather than fatty-acid acylation. Use this tag for questions about the fusion-protein…

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askedthreadlock719k283 Dec 2025
5Can you say which laboratory and which method? The answer changes with both. – lyoph_cake 6 months ago
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