Page 8 of 33 · 788 questions tagged purity.
Setup, so nobody has to ask: BCH · cagrilintide. I have read the primary source rather than the summary, which has left me with more questions. I understand the…
For reference: 97.9% · 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…
The specifics, since they change the answer: 97.1% · PeptideMeter · 95.2% · Janoshik. I am trying to choose between two options that are usually discussed as though…
What I am working with: 95.2% · sampling plan. I would like help reading this properly rather than being told what conclusion to reach. I have the full report…
For reference: 97.1% · survodutide. I would rather understand the derivation than memorise the outcome. Two people I asked gave two answers that differ by a factor of…
I have the report as a PDF with the chromatogram on page two, so I can quote specifics. I can do the algebra. I am not confident about the conversion factors. If…
Stated plainly: 95.2% · a C18 column · semaglutide. I have read the primary source rather than the summary, which has left me with more questions. I understand the…
What I have: 98.8% · retatrutide. 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…
Stated plainly: 99.1% · sampling plan. I would like help reading this properly rather than being told what conclusion to reach. I have the full report including the…
Details up front: 95.2% · Janoshik · 97.6% · Medutest. I have used one of these for a while and I am considering switching, which requires a reason. What I care about…
A vendor sent me a report showing a clean deconvolved mass at 4113.6 for semaglutide with, in their words, "no impurity peaks detected". Their sales copy turns that…
The particulars: 99.1% · PeptideMeter · 96.8%. An unexpected observation, and I would like a differential rather than reassurance. The conditions were within what I…
Conditions: 98.4% · oral semaglutide · BCH. 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…
Numbers first: 95.2% · retatrutide. This should be a straightforward calculation and I keep getting two different answers. The numbers are arbitrary; the method is…
The case in front of me: +5 · 4813.5 Da. 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…
The case in front of me: HJ · liraglutide. 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…
Setup, so nobody has to ask: orforglipron · a C18 column · retatrutide. I suspect the honest answer is that it depends, in which case I would like to know on what.…
What I am working with: 99.1% · Medutest · 95.2% · Medutest. I suspect the honest answer is that it depends, in which case I would like to know on what. Assume I can…
The particulars: 96.4% · 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…
What I have: 98.2% · Janoshik · 97.9% · PeptideMeter. I have used one of these for a while and I am considering switching, which requires a reason. What I care about…
Conditions: aspartimide formation · liraglutide · 40 °C. This is one of those things that everyone repeats and nobody derives. This matters practically, not just…
Details up front: 95.2% · lot-specific certificate. This is presented as though it settles something, and I am not convinced it does. I have two documents that appear…
Setup, so nobody has to ask: 95.2% · Medutest · 96.8% · PeptideMeter. 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: 98.2% · a C18 column · ecnoglutide. I would like help reading this properly rather than being told what conclusion to reach. I have the…