Page 32 of 35 · 833 questions tagged purity.
Concretely: 98.4% · 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,…
Numbers first: 98.8% · Janoshik · 96.4%. 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…
Concretely: +5 · 4731.3 Da. 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 can…
Stated plainly: BCH · a GLP-1 receptor agonist. I would like help reading this properly rather than being told what conclusion to reach. I have the full report…
The lot number on the vial matches the certificate, which at least rules out the easy problem. I keep seeing this stated as a fact with no explanation attached, and…
Setup, so nobody has to ask: dimerisation · a C18 column. The empirical answer seems settled. The explanation does not. If the honest answer is that nobody knows, I…
Conditions: 97.9% · VendorInvestigate · 97.1% · Janoshik. These are treated as interchangeable and I do not think they are. If both are acceptable I would like to…
For reference: 99.4% · PeptideMeter · 98.2% · Janoshik. I am trying to choose between two options that are usually discussed as though only one exists. I am not…
Stated plainly: dulaglutide · 98.8%. The units are where I keep going wrong, so please be explicit about them. I have sanity-checked the order of magnitude and it…
Numbers first: 97.6% · Janoshik · 95.2%. 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…
Conditions: tirzepatide · PeptideMeter. I want to understand what this actually establishes, as opposed to what it is being used to imply. My concern is that I am…
The case in front of me: 99.1% · liraglutide · FGP. I want to decide this in advance so that I am not deciding it under pressure later. Assume I will follow the plan…
Conditions: 97.1% · 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…
Setup, so nobody has to ask: +3 · 4207.2 Da. The units are where I keep going wrong, so please be explicit about them. I have sanity-checked the order of magnitude…
The lot number on the vial matches the certificate, which at least rules out the easy problem. The empirical answer seems settled. The explanation does not. If the…
The particulars: +4 · 4113.6 Da. I would like the arithmetic checked rather than the conclusion asserted. I have deliberately not used an online calculator because I…
Numbers first: 99.4% · 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…
Details up front: cagrilintide · a C8 column · retatrutide. I want to know what the trade-off actually is rather than which option is fashionable. I would rather have…
Details up front: hydrolysis · dulaglutide · minus 20 °C. I suspect the usual explanation for this is wrong, or at least incomplete. I am aware this may have a boring…
The particulars: 96.4% · PeptideMeter · 95.2%. An unexpected observation, and I would like a differential rather than reassurance. The conditions were within what I…
Numbers first: Medutest · 98.2%. I have a result I cannot explain, and I would rather diagnose it than guess. I have checked the obvious explanations and eliminated…
Stated plainly: 97.9% · Medutest · 98.4% · PeptideMeter. Both of these get recommended confidently by different people, which suggests neither is obviously right. My…
The particulars: 99.4% · a wide-pore C18 column · mazdutide. I have the document in front of me and I can read the numbers. What I cannot do is interpret them. I am…
The specifics, since they change the answer: VendorInvestigate · 98.8%. An unexpected observation, and I would like a differential rather than reassurance. The…