An index, not a shop

Why this site exists

Research peptides are sold by hundreds of shops, and most of them tell you very little: a name, a price, a stock photo. Finding the molecular weight, the half-life, the published studies or a laboratory test report usually means leaving the shop and digging.

Alphapeptide puts that information next to the product. Every compound here has a page with its mass, half-life, sequence where it is short enough to print, mechanism as described in the literature, and a separate research overview with sources. Where the seller has published a certificate of analysis, we open it, read it and show what it says.

There is no carousel, no countdown timer and no claim about what any compound does in a human body. Everything here is research material, indexed and cited.

How we chose a partner

We work with one supplier, Purita Peptides, and we looked for things we could check rather than things we were told:

• Documentation we can open. Their certificates link to the testing laboratory's own verification page, so a report can be checked independently of either of us.
• Terms in writing. Delivery times, insurance, cold-chain packaging and the returns rules are published on their site. We repeat them here word for word rather than paraphrasing them into promises.
• A product we can describe. Every item is a pre-formulated pen with its contents and storage conditions stated, which is what lets us list them plainly.
• Live data. Stock and prices come from their catalogue feed every hour, so a price you see here is the price at their checkout.

We review this as their range and documentation change. If a product has no certificate, the page says so instead of hiding the gap.

What we do not do

We do not hold stock, take payment or ship. We do not write dosing advice, and we do not put study outcomes next to a buy button. We do not accept paid placement from other suppliers.