Page 4 of 35 · 833 questions tagged purity.
Details up front: 99.4% · retatrutide · GL Biochem. I would rather over-plan the first cycle and simplify later. I am prepared to do the work if someone can tell me…
I have the report as a PDF with the chromatogram on page two, so I can quote specifics. Somebody stated this to me confidently and I would like to check it before…
I split one vial and sent halves to two independent laboratories. Purity came back 98.1% and 99.4%. Both sent chromatograms. Both look competent. The 1.3-point gap is…
Stated plainly: 96.4% · batch certificate. I have read the primary source rather than the summary, which has left me with more questions. I understand the headline. I…
Setup, so nobody has to ask: Janoshik · 97.6%. I noticed this today and I have not touched anything since, in case the state is diagnostic. I have not discarded…
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…
Details up front: 98.8% · orforglipron · 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…
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…
Setup, so nobody has to ask: a sterility test · dulaglutide. I want to know what the trade-off actually is rather than which option is fashionable. I would rather…
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: 98.4% · Medutest · 96.8%. I noticed this today and I have not touched anything since, in case the state is diagnostic. I have not discarded…
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…
Stated plainly: 98.8% · Medutest · 98.4%. I noticed this today and I have not touched anything since, in case the state is diagnostic. I have not discarded anything…
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.…