Page 23 of 35 · 833 questions tagged purity.
Stated plainly: retatrutide · 98.2%. I have worked this out and I would like someone to find the error, because I suspect there is one. My working so far, for the…
Setup, so nobody has to ask: 98.4% · sampling plan. I would like help reading this properly rather than being told what conclusion to reach. I have the full report…
The case in front of me: 99.1% · VendorInvestigate · 98.4% · PeptideMeter. I would like the axes of comparison first and the recommendation second. I have tried the…
The specifics, since they change the answer: deamidation · semaglutide · 30 °C. I understand the observation; what I do not understand is the mechanism behind it. I…
Setup, so nobody has to ask: retatrutide · a C18 column · liraglutide. Both of these get recommended confidently by different people, which suggests neither is…
Details up front: hydrolysis · dulaglutide · 30 °C. I suspect the usual explanation for this is wrong, or at least incomplete. I am aware this may have a boring…
For reference: 97.1% · chromatogram. I want to understand what this actually establishes, as opposed to what it is being used to imply. My concern is that I am being…
Concretely: 98.8% · a C4 column · orforglipron. I would like to know the limits of what can be inferred from this. What I am trying to avoid is over-reading a single…
The case in front of me: aspartimide formation · oral semaglutide · minus 20 °C. This is one of those things that everyone repeats and nobody derives. This matters…
Numbers first: 99.1% · a C8 column · tirzepatide. This is presented as though it settles something, and I am not convinced it does. I have two documents that appear…
Concretely: aspartimide formation · tirzepatide · 25 °C. This is one of those things that everyone repeats and nobody derives. This matters practically, not just…
Setup, so nobody has to ask: dulaglutide · a C18 column · retatrutide. I suspect the honest answer is that it depends, in which case I would like to know on what.…
Setup, so nobody has to ask: orforglipron · a C18 column · semaglutide. I suspect the honest answer is that it depends, in which case I would like to know on what.…
What I have: 99.1% · Janoshik · 97.9%. Before I write this off, I want to check whether it is a known failure mode. I have the lot number, the certificate and the…
Conditions: identity confirmation by mass spectrometry · semaglutide. I am trying to choose between two options that are usually discussed as though only one exists.…
What I have: 99.4% · Janoshik · 97.1% · PeptideMeter. I want to know what the trade-off actually is rather than which option is fashionable. I would rather have a…
What I have: mazdutide · a C8 column · semaglutide. I have used one of these for a while and I am considering switching, which requires a reason. What I care about is…
I have both a purity figure and a content figure, which is why the discrepancy is visible. I am trying to choose between two options that are usually discussed as…
Stated plainly: dimerisation · cagrilintide · minus 80 °C. I keep seeing this stated as a fact with no explanation attached, and unexplained facts make me suspicious.…
Stated plainly: retatrutide · a C18 column · semaglutide. Both of these get recommended confidently by different people, which suggests neither is obviously right. My…
What I am working with: 97.9% · Medutest · 98.4%. I noticed this today and I have not touched anything since, in case the state is diagnostic. I have not discarded…
Conditions: 98.8% · VendorInvestigate · 98.2%. I have two candidate explanations and no way to distinguish them. The same procedure has worked without incident…
The case in front of me: 95.2% · a C4 column · orforglipron. The figures are clear enough; the question is what they mean and what they do not. I can supply the…
Setup, so nobody has to ask: 96.4% · a C18 column · survodutide. I would like help reading this properly rather than being told what conclusion to reach. I have the…