So you're setting up a new study and need relaible supply of retatrutide — we get a lot of first-timers who've been burned by sketchy batches, and honestly, it's a mess to sort out.
Purity runs at 99% by HPLC, which matters more for dose-response work than most people realize, and each foil bag holds 10mg sealed under nitrogen — shelf life is two years in a cool dry place, though opened vials we'd keep chilled at 2-5°C.

It's not ideal for anything in vivo beyond basic screening, basically because the research-grade standdard means you're getting a tight tolerance but no guarantee on endotoxin levels, and most buyers go with teh 10mg format since it's easier to reconstitute than larger drums.
Anyway, we usually have stock, but confirm lead time (custom synthesis can add 20 days or so) — just let us know quantiy and we'll quote MOQ.