Page 3 of 35 · 833 questions tagged purity.
Conditions: 99.1% · 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…
Concretely: 98.4% · VendorInvestigate · 96.4%. I have two candidate explanations and no way to distinguish them. The same procedure has worked without incident…
The specifics, since they change the answer: fibrillation · a wide-pore C18 column. I understand the observation; what I do not understand is the mechanism behind it.…
What I am working with: 96.4% · a C18 column · semaglutide. I have read the primary source rather than the summary, which has left me with more questions. I…
Numbers first: 98.8% · list of related substances. I can parse the result. I am less sure what it licenses me to conclude. I have deliberately not looked at anyone…
Concretely: 95.2% · liraglutide · 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,…
The case in front of me: 99.1% · 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…
Concretely: 96.4% · VendorInvestigate · 99.4% · Janoshik. I would like the axes of comparison first and the recommendation second. I have tried the first option and…
What I am working with: retatrutide · a C18 column · cagrilintide. Both of these get recommended confidently by different people, which suggests neither is obviously…
Concretely: SGN · dulaglutide. I can parse the result. I am less sure what it licenses me to conclude. I have deliberately not looked at anyone else’s interpretation…
The case in front of me: 97.6% · VendorInvestigate · 96.8% · PeptideMeter. These are treated as interchangeable and I do not think they are. If both are acceptable I…
What I have: dimerisation · mazdutide · room temperature. I keep seeing this stated as a fact with no explanation attached, and unexplained facts make me suspicious.…
For reference: 97.9% · ecnoglutide · JEEP. I am at the decision point and I would rather think it through than improvise. I would rather spend money on measurement…
The specifics, since they change the answer: identity confirmation by mass spectrometry · ecnoglutide. I am trying to choose between two options that are usually…
What I have: 97.1% · lot-specific certificate. This is presented as though it settles something, and I am not convinced it does. I have two documents that appear to…
The particulars: 96.4% · PeptideMeter · 98.8%. An unexpected observation, and I would like a differential rather than reassurance. The conditions were within what I…
Concretely: SSA · 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…
The particulars: 95.2% · PeptideMeter · 98.8% · Janoshik. The comparison I want does not seem to exist anywhere in a form I can evaluate. I have read the arguments…
The specifics, since they change the answer: 98.8% · PeptideMeter · 97.9%. An unexpected observation, and I would like a differential rather than reassurance. The…
The case in front of me: 98.8% · oral semaglutide · QSC. The failure mode I am trying to avoid is making this decision emotionally. I have twelve months in view and I…
The specifics, since they change the answer: 98.4% · chromatogram. I want to understand what this actually establishes, as opposed to what it is being used to imply.…
The particulars: 98.8% · a wide-pore C18 column · a GLP-1 receptor agonist. I want to understand what this actually establishes, as opposed to what it is being used…
What I have: +2 · 4207.2 Da. This should be a straightforward calculation and I keep getting two different answers. The numbers are arbitrary; the method is what I am…
The particulars: 99.4% · PeptideMeter · 97.1%. Something has gone wrong and I would like to know how badly before I decide what to do. Nothing else in the setup…