Page 11 of 20 · 466 questions tagged hplc.
Conditions: 98.2% · tirzepatide. Please show the division. I want to check my own against yours. I would like the general form as well as the specific number, so I…
The case in front of me: semaglutide · a C4 column · cagrilintide. These are treated as interchangeable and I do not think they are. If both are acceptable I would…
Stated plainly: aggregation · mazdutide · minus 80 °C. I keep seeing this stated as a fact with no explanation attached, and unexplained facts make me suspicious. My…
What I am working with: 98.8% · batch certificate. I have read the primary source rather than the summary, which has left me with more questions. I understand the…
The case in front of me: 98.4% · tirzepatide. Please show the division. I want to check my own against yours. I would like the general form as well as the specific…
Concretely: oxidation · liraglutide · minus 80 °C. This is one of those things that everyone repeats and nobody derives. This matters practically, not just…
Concretely: oxidation · liraglutide · room temperature. This is one of those things that everyone repeats and nobody derives. This matters practically, not just…
Setup, so nobody has to ask: aggregation · cagrilintide · minus 80 °C. I keep seeing this stated as a fact with no explanation attached, and unexplained facts make me…
What I am working with: Janoshik · 98.4%. I noticed this today and I have not touched anything since, in case the state is diagnostic. I have not discarded anything…
For reference: 97.6% · list of related substances. I have the document in front of me and I can read the numbers. What I cannot do is interpret them. I am reasonably…
Concretely: aspartimide formation · tirzepatide · minus 80 °C. I want to know whether this is a real physical effect or an artefact of how it is measured. What…
Conditions: 97.9% · method section. The figures are clear enough; the question is what they mean and what they do not. I can supply the numbers if the specifics…
Numbers first: 98.4% · 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 specifics, since they change the answer: fibrillation · survodutide · 2–8 °C. I understand the observation; what I do not understand is the mechanism behind it. I…
I have started asking labs for "the system suitability data" and getting back either silence, a shrug, or a screenshot of six retention times. I clearly do not know…
Stated plainly: 96.8% · batch certificate. I have read the primary source rather than the summary, which has left me with more questions. I understand the headline. I…
The specifics, since they change the answer: VendorInvestigate · 98.2%. Something has gone wrong and I would like to know how badly before I decide what to do.…
Details up front: hydrolysis · orforglipron · 37 °C. I can predict the outcome but I cannot explain it, which means I will get the next case wrong. I would like to…
Numbers first: 96.4% · a C8 column · liraglutide. I can parse the result. I am less sure what it licenses me to conclude. I have deliberately not looked at anyone…
Details up front: cagrilintide · a C8 column · cagrilintide. I want to know what the trade-off actually is rather than which option is fashionable. I would rather…
Conditions: survodutide · a C4 column · survodutide. I would like the axes of comparison first and the recommendation second. I have tried the first option and it…
Numbers first: Medutest · 99.4%. 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 date, and…
Setup, so nobody has to ask: aggregation · a C18 column. I keep seeing this stated as a fact with no explanation attached, and unexplained facts make me suspicious.…
Stated plainly: aggregation · cagrilintide · 30 °C. I keep seeing this stated as a fact with no explanation attached, and unexplained facts make me suspicious. My…