About Peptide Index

Peptide Index is a file-based reference database of research peptides. Every entry is a plain Markdown/MDX file with structured frontmatter — there is no CMS and no database, so the whole catalogue is version-controlled and reviewable like code.

What you’ll find

Each peptide entry collects its sequence, basic chemistry, aliases and citations alongside a plain-language overview. A colour-coded sequence “fingerprint” visualises the residue composition at a glance. Longer-form guides cover cross-cutting topics like nomenclature and handling.

How compound entries are written

Compound entries are reference material, not recommendations. Copy is kept factual, claims are attributed to primary sources, and nothing is framed as dosing or medical advice. Where a figure has not been verified it is marked as such.

Supplier listings

The supplier comparison is a different kind of page and should be read differently. Attributes there are recorded from each supplier’s own public website on a stated date, and cover things you can check yourself — published purity figures, whether Certificates of Analysis can be viewed before ordering, testing method, and product format. They go out of date, and “not stated” means we did not find something on a supplier’s site rather than that it is absent from their business.

Listings are ordered alphabetically rather than ranked, and inclusion is not an endorsement. Verify anything that matters directly with a supplier before buying from them.

How it’s built

Next.js (App Router) with statically-exported output, Tailwind CSS for styling, and next-mdx-remote to render the MDX bodies. Because it builds to static files, it can be hosted anywhere.