how much of what we believe about thymosin actually comes from secretagogue threads

how much of what we believe about thymosin actually comes from secretagogue threads, and I want the answer with the reasoning attached rather than just the conclusion.

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.

Storage conditions came back specific rather than generic when I asked. That told me somebody had actually done stability work.

Bought small on anything without a testing history here. That rule has never once cost me anything.

I will update this if the picture changes rather than quietly leaving it up.