So you're putting together a panel for metabolic work and looking at Cagrilintide or Retatrutide, which is interesting because most buyers new to the field start with just one peptide and then realize they need a combination for more nuanced studies — we get that a lot form academic labs and small biotechs who are basically screening multiple pathways at once.
What you'll find in each sealed vial is a white to off- that's been flushed with inert gas to keep it stable during shippng, and the purity runs ≥99.9% by HPLC which matters for dose-response work where a few percent impurity can throw off binding curves.
Storage is straightforward but non-negotiable — keep it at -20°C in a desiccator and you'll get the full 24-month shelf life, though we usually have stock so you're looking at a lead time of about 10 business days or so (check for current availability).
These aren't suited for anything beyond metabolic research, and we've seen people try to use them for cell culture work where solubility in water or buffer is fine, but the variable molecular weight means you'll need to calculate reconstitution volumes per batch — the COA has the exact value but roughly it's in teh 3-5 kDa range depending on which peptide you're working with.
One thing buyers often don't think to ask is that the lyophilized cake can look slightly different between batches, sometimes a bit fluffier or more compact, but that's just how it come out of the freeze-dryer and doesn't affect the 99.9% purity or activity.
Anyway, the 5mg or 10mg vials are most common sizes we ship, and the packaing is sealed under argon so you don't get moisture absorption during transit.
We typically require a minimum order of 10 vials per peptide, but we can discuss smaller quantities if you're just starting out. Just reach out and we'll see what we can do.
Yes, we include a COA with every batch that shows the HPLC purity analysis and confirms the ≥99.9% purity. Just request it with your order.
Absolutely, we can customize the amount per vial based on your research protocol. Let us know the exact dosage you need and we'll adjust the fill accordingly.
Each vial is sealed under inert gas to maintain stability, and if kept at -20°C in a desiccated environment, they last 24 months from the manufacture date.
We usually ship within 3-5 business days after your order is confirmed. For larger bulk orders, it might take a week or two depending on the volume.