# Peptaura > Peptaura is a marketplace for comparing research-compound listings from independent vendors, with public prices, stock information, customer reviews, and certificates of analysis (COAs). The canonical website is https://www.peptaura.com. Peptaura operates the marketplace; the vendor named on a listing is its seller. A listing, a supplier purity claim, a laboratory report, and a verified batch record provide different kinds of evidence. A COA describes the sample tested and does not establish that a product is suitable for human use. Products are sold for research purposes under the Terms of Service. ## Marketplace and evidence - [Catalog](https://www.peptaura.com/#catalog): Browse compounds and compare vendors, dosage and package options, current prices, and stock. Country, warehouse, and batch filters narrow the listings. - [Public price index](https://www.peptaura.com/price-index): Current public package prices, comparable unit prices, stock and batch evidence, with a published comparison method. - [Vendor directory](https://www.peptaura.com/vendors): Public vendor profiles, customer reviews, and links to each vendor's available catalog. - [Certificates of analysis](https://www.peptaura.com/coas): Public laboratory reports with compound, vendor, dosage, date, batch, test type, and available result details. Open the original report to inspect its evidence. - [Batch verification](https://www.peptaura.com/verify): Look up a batch number and inspect the matching public records, linked reports, and any displayed quality or recall notices. - [How Peptaura works](https://www.peptaura.com/articles/how-peptaura-works): A guide to comparing listings, prices, vendor reviews, and batch evidence. ## Support and policies - [Frequently asked questions](https://www.peptaura.com/faq): How the marketplace works, vendor standards, testing, and ordering risks. - [Contact support](https://www.peptaura.com/contact): Public support guidance and contact options. - [Terms of Service](https://www.peptaura.com/terms-of-service): Research-use restrictions, marketplace responsibilities, and current order and refund terms. - [Privacy policy](https://www.peptaura.com/privacy-policy): How Peptaura handles personal data. ## Machine-readable public sources - [Sitemap](https://www.peptaura.com/sitemap.xml): Discover current canonical public catalog, product, vendor, and published article URLs. - [Product feed](https://www.peptaura.com/pages/product-feed): Public listing data with product links, displayed prices, and availability. Consult the current product page for the selected option; shipping and final checkout totals can differ. - [Public COA API](https://www.peptaura.com/api/coas): Paginated public COA records and filters. - [Public API documentation](https://www.peptaura.com/docs/api): The public feed and COA response contracts. - [API catalog](https://www.peptaura.com/.well-known/api-catalog): Links to documented machine-readable services. Public HTML pages on the production website also support `Accept: text/markdown`. This retrieves a Markdown representation of the same public page; `x-markdown-tokens` is returned when available. Prices, stock, vendor availability, and batch evidence can change. Prefer the current canonical page and original report when citing those facts. ## Optional - [Laboratory integration guide](https://www.peptaura.com/docs/lab-integration.md): Documentation for approved laboratory partners. Partner order and result operations require authorization and are not public research evidence.