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You're probably finding that sourcing consistent peptide material for retatrutide trials is a headache — one batch runs fine, next throws your results off completely, and that's a problem we see all the time.
What we do is run every batch through HPLC and MS verification before it ships, so you're not guessing about purity or identity when you're in the middle of a study, and we keep the same tight specs across lots.
≥99% purity, MW at 1007.19, and it's soluble in water which makes reconstitution straightforward for most protocols — storage is 2-8°C in a dry enviroment, shelf life is 24 months or so.
Basically, we ship it as a white to off-white powder in 1g, 5g, or 10g packs, but custom quantities are fine if you need something else, and we usually have stock on the 5g.
It's not ideal for anything outside research use, obviously, and the CAS is 50-56-6 if you need to cross-check against your reference standdard.
One thing that catches people off guard is that teh powder is hygroscopic, so don't leave it out longer than necesary when weighing — we always include that note with the COA.
