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About RexPeps
RexPeps is a USA-operated research compound supplier committed to purity, transparency, and batch-level documentation for every product we ship.
We started RexPeps because researchers deserve a supplier they can trust. Too many vendors cut corners on documentation, skip independent testing, or make promises they can't back up with data.
Every compound we sell ships with a batch-specific Certificate of Analysis from an independent laboratory. No exceptions. No self-certification.
Four principles that guide every decision, from sourcing to shipping.
Every batch undergoes independent third-party HPLC and mass spectrometry analysis before release. We publish the results, not just the claims.
Batch-specific COAs available for every product. Real test dates, real lab data, real batch numbers. No generic certificates, no recycled reports.
All orders ship in unmarked, tamper-evident packaging within 48 hours. Your research privacy is respected at every step of the process.
Questions about a compound, a COA, or your order? Our support team responds within 24 hours with real answers, not automated templates.
We hold ourselves to the highest standard because your research depends on it. Every decision we make, from sourcing partners to packaging materials, prioritizes compound integrity.
12
Compounds
≥98%
Avg Purity
48hr
Ship Time