Page 21 of 35 · 833 questions tagged purity.
For reference: 99.1% · survodutide · JEEP. I would like to define my thresholds before I have a result, for obvious reasons. I want a plan with explicit stopping…
What I am working with: 96.4% · Medutest · 98.4%. This is not behaving the way I expected and I want to understand the discrepancy before I act on it. I have…
The particulars: 96.8% · PeptideMeter · 99.1%. Something has gone wrong and I would like to know how badly before I decide what to do. Nothing else in the setup…
I am comparing a supplier certificate against an independent result on the same lot. I want to know whether this is a real physical effect or an artefact of how it is…
Setup, so nobody has to ask: 98.8% · cagrilintide. I have worked this out and I would like someone to find the error, because I suspect there is one. My working so…
What I have: 98.8% · dulaglutide. I can do the algebra. I am not confident about the conversion factors. If there is a standard way to lay this out, I would rather…
The case in front of me: oral semaglutide · PeptideMeter. I want to understand what this actually establishes, as opposed to what it is being used to imply. My…
The case in front of me: aspartimide formation · tirzepatide · 40 °C. This is one of those things that everyone repeats and nobody derives. This matters practically,…
Stated plainly: aggregation · a GLP-1 receptor agonist · 25 °C. The empirical answer seems settled. The explanation does not. If the honest answer is that nobody…
Concretely: 96.8% · VendorInvestigate · 99.4%. I think I have a problem. I am not yet sure whether it is a real problem or a measurement artefact. I want to know…
The specifics, since they change the answer: deamidation · a wide-pore C18 column. I would like the mechanism, because I want to be able to reason about the cases…
For reference: 97.9% · a wide-pore C18 column · mazdutide. I want to understand what this actually establishes, as opposed to what it is being used to imply. My…
Setup, so nobody has to ask: Janoshik · 98.2%. This is not behaving the way I expected and I want to understand the discrepancy before I act on it. I have…
What I am working with: orforglipron · 95.2%. I have worked this out and I would like someone to find the error, because I suspect there is one. My working so far,…
Conditions: 97.9% · VendorInvestigate · 99.4%. I have two candidate explanations and no way to distinguish them. The same procedure has worked without incident…
Setup, so nobody has to ask: a residual-solvent screen · a GLP-1 receptor agonist. I suspect the honest answer is that it depends, in which case I would like to know…
Setup, so nobody has to ask: 98.8% · a GLP-1 receptor agonist. I have worked this out and I would like someone to find the error, because I suspect there is one. My…
What I am working with: 98.4% · a GLP-1 receptor agonist · CPC. I would like to set this up properly once, rather than adjust it repeatedly. My budget is real but not…
Conditions: 96.8% · a C4 column · retatrutide. The figures are clear enough; the question is what they mean and what they do not. I can supply the numbers if the…
Details up front: 95.2% · Janoshik · 97.1% · Medutest. I want to know what the trade-off actually is rather than which option is fashionable. I would rather have a…
I have both a purity figure and a content figure, which is why the discrepancy is visible. I can do the algebra. I am not confident about the conversion factors. If…
What I have: 99.1% · Janoshik · 96.4%. I have a result I cannot explain, and I would rather diagnose it than guess. I have checked the obvious explanations and…
Setup, so nobody has to ask: 99.1% · a GLP-1 receptor agonist. I have worked this out and I would like someone to find the error, because I suspect there is one. My…
Conditions: FGP · mazdutide. I have read the primary source rather than the summary, which has left me with more questions. I understand the headline. I do not…