Page 4 of 33 · 788 questions tagged purity.
The case in front of me: survodutide · 97.9%. Please show the division. I want to check my own against yours. I would like the general form as well as the specific…
Setup, so nobody has to ask: 97.9% · Medutest · 98.8% · Janoshik. Both of these get recommended confidently by different people, which suggests neither is obviously…
What I have: a sterility test · dulaglutide. I want to know what the trade-off actually is rather than which option is fashionable. I would rather have a defensible…
Setup, so nobody has to ask: Janoshik · 99.1%. I noticed this today and I have not touched anything since, in case the state is diagnostic. I have not discarded…
The particulars: VendorInvestigate · 97.6%. An unexpected observation, and I would like a differential rather than reassurance. The conditions were within what I…
Concretely: semaglutide · a C4 column · liraglutide. These are treated as interchangeable and I do not think they are. If both are acceptable I would like to know…
Concretely: 97.9% · tirzepatide · ERP. I want to decide this in advance so that I am not deciding it under pressure later. Assume I will follow the plan I write down,…
This is my second independent submission on material from the same supplier. This should be a straightforward calculation and I keep getting two different answers.…
I am comparing a supplier certificate against an independent result on the same lot. The units are where I keep going wrong, so please be explicit about them. I have…
Conditions: 98.8% · a C4 column · dulaglutide. 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…
What I am working with: retatrutide · a C18 column · cagrilintide. I suspect the honest answer is that it depends, in which case I would like to know on what. Assume…
Setup, so nobody has to ask: a formic acid mobile phase · cagrilintide · a wide-pore C18 column. The empirical answer seems settled. The explanation does not. If the…
I sent two vials from two different batches, both labelled 10 mg semaglutide, for independent testing and asked for purity and quantification on each. The results…
Details up front: Medutest · 98.4%. 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,…
The specifics, since they change the answer: 96.8% · ecnoglutide · WWB. I am at the decision point and I would rather think it through than improvise. I would rather…
For reference: deamidation · ecnoglutide · 37 °C. I understand the observation; what I do not understand is the mechanism behind it. I have read the two review…
The specifics, since they change the answer: VendorInvestigate · 95.2%. Something has gone wrong and I would like to know how badly before I decide what to do.…
Details up front: 99.4% · dulaglutide · QYB. This is a planning question. I know what my options are; I do not know how to weigh them. What I want is the minimum…
Conditions: 97.6% · date of analysis. 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 result,…
What I have: 97.1% · retatrutide. This should be a straightforward calculation and I keep getting two different answers. The numbers are arbitrary; the method is what…
Conditions: ecnoglutide · 99.1%. I want the working, not the result — I need to be able to redo it with different numbers. I care about the precision as well as the…
The particulars: 99.1% · 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…
Details up front: a GLP-1 receptor agonist · Janoshik. I can parse the result. I am less sure what it licenses me to conclude. I have deliberately not looked at…
For reference: GGPeps · ecnoglutide. 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…