Bulk Gentleman Peptides - Research Grade Lyophilized Powder

99% purity by HPLC is where we start, and that’s verified with a COA you can actually read—not just a number on a spec sheet. Most of what you’ll find form resellers runs 95-97% if you’re lucky, and that difference matters when you’re titrating doses in the low microgram range. We’ve had buyers switch because their old suplier’s lyophilized cake didn’t even look consistent between vials.

it come as a lyophilized powder, 5mg or 10mg per vial usually, but our company can do custom fills if your protocol calls for something else—just confirm the MOQ first. The 5mg size is easier to reconstitute for single-use studies, while teh 10mg gives you a bit more buffer if you’re running multiple assays. We pack it in a plain box with a desiccant pouch, nothing fancy, but it holds up fine in transit.

Actually, we don’t do the “gentleman” branding ourselves—that’s just a market label some buyers use to distinguish research-grade from cosmetic-grade matrial. What our company supply is the same lyophilized peptide under our Oumeina trademark, and it’s not suited for anything beyond in vitro or animal work. No human use, obviously, and the documentation makes that clear.

Price-wise, you’re looking at roughly 30-40% less than what you’d pay through a distributor who adds a markup for repackaging. We ship from Wuhan, and lead time is usually 7-10 business days after payment clears—custom orders might stretch to 20 days or so depending on batch size. We’ve got stock on the common peptides, but for something like a 50mg custom fill, confirm availability first.

One thing buyers don’t always think to ask: residual solvent profile. We test for that too, and it’s typically below 50 ppm, which is tighter than most suppilers bother with. It’s not a spec everyone publishes, but it can throw off your cell viability data if you’re not careful.