does secretagogue actually matter or is it forum lore at this point
does secretagogue actually matter or is it forum lore at this point. I am not trying to be the "source?" guy. I would just like a source.
Asked ERP which lines they keep in regional stock versus make to order and got a clear split. It changed what I ordered.
Sent an unusual compound to Medutest because nobody on this site had ever posted one. 98.9% against a claimed 98.0%.
The three questions to ask before ordering anything from the long tail of a catalogue.
What exactly is it — catalogue number or sequence, not a common name, because several common names map to more than one molecule. How was identity established — mass against theoretical, ideally, rather than a bare purity figure. What are the storage conditions, stated specifically, with a state and a duration attached.
Then two commercial questions that save time: is this a stocked line or made to order, and what is the lead time in writing. All five are one email, and the shape of the reply tells you a great deal before any material moves.
If two or three other people have done the same thing we might actually learn something. Alone it is an anecdote.
best — the order this archive was captured in
For any compound with a thin testing history, identity is the first question. Mass spectrometry against a theoretical mass answers it; an area-percent purity figure does not.
Ordered under a name that turned out to cover two different molecules. Nobody’s fault but mine for not asking.
net peptide content is where the surprises live
What storage conditions did they specify?
ask what the reference standard was
ask which lines are actually stocked rather than made to order
Agreed — identity first for anything off the well-travelled list. The purity number is meaningless until you know what it is pure of.
Purity methods differ by compound class. A gradient and wavelength developed for one peptide will not necessarily resolve the relevant impurities of another.
Purity methods differ by compound class.
Adding the practical question — stocked or made to order, and what is the lead time.
Storage guidance that names a temperature, a state and a duration reflects actual stability work. Generic guidance usually reflects a template.
the same name covers several different molecules in this space
a secretagogue and a fragment are not the same class of thing
lead times on unusual lines are the thing to confirm up front
Careful — that is a claim about efficacy and there is essentially no human evidence behind it.
What lead time were you quoted for that line?
That method was developed for a different compound class and would not resolve the impurities you are asking about.
That method was developed for a different compound class and would not resolve the impurities you are asking about.
two_mil_or_one is right that a purity figure without a method is not comparable to one with a method.
if nobody has tested it here, that is a fact about us, not the compound
Storage guidance that names a temperature, a state and a duration reflects actual stability work.
Disagreeing with this bit: handling for one compound does not transfer to another by default.
Standing reminder: research-use-only material is not approved for human use, and no outcome claims without evidence.
Standing reminder: research-use-only material is not approved for human use, and no outcome claims without evidence.
Agreed — and the naming problem is worse than most people here realise.
Yes. Nothing in this catalogue is approved for human use and the board should keep saying so.
On the thin testing history in this board, and what to do about it.
Most of the compounds discussed here have a handful of independent results across the entire site, and several have none. That is a fact about how few members have paid for testing, not a judgement about the material.
What follows: buy small, test identity first for anything unusual, and post the result even when it is unremarkable. The vendor source pages are built from exactly these submissions, and the compounds with the thinnest coverage are the ones where one more entry changes the picture most. Research material is not approved for human use, so what this board can usefully build is an analytical record.
On the thin testing history in this board, and what to do about it.
This is the rule for anything unusual. Identity before anything else.
the less-tested the compound, the more the identity test matters
- 1Storage guidance that names a temperature, a state and a duration reflects…14 comments in this branch · started by u/gustav_solberg
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