US Research Peptide Supplier
Research Peptides
A US-based research peptide supplier for independent researchers, academic labs, and CROs. Every peptide is synthesized in-house, purified to ≥99% HPLC, and independently verified by a third-party lab.
About This Compound
BioInfinity is a US-based research peptide supplier serving independent researchers, academic laboratories, contract research organisations, and educational institutions across the United States. Our catalog is focused entirely on peptides that are frequently referenced as tool compounds in the current preclinical and in-vitro literature — not pharmaceuticals, not human-use products, and not supplements.
Every peptide we ship is manufactured by solid-phase peptide synthesis (SPPS) using Fmoc chemistry, purified by preparative reverse-phase HPLC to ≥99% area under the 214 nm peak, identity-confirmed by ESI mass spectrometry (within ±0.5 Da of theoretical), and endotoxin-tested below 0.5 EU/mg by LAL assay. Each finished lot is retained and sent to Verum Analytics (Switzerland) for an independent third-party COA that ships with every order and is publicly verifiable in our /coa-library.
Our catalog is organised by research-peptide family: healing / cytoprotective (BPC-157, TB-500, GHK-Cu, KPV), GLP-family incretin (Semaglutide, Tirzepatide, Retatrutide), mitochondrial & longevity (MOTS-c, SS-31, Epithalon), immune / thymic (Thymosin Alpha-1), neuropeptides (DSIP, Semax, Selank), and growth-hormone-axis (CJC-1295, Ipamorelin). Every product has a dedicated buy page with its full research context, quality specs, and FAQ.
Quality Benchmarks
Every batch shipped from BioInfinity is verified against these specifications by an independent third-party lab before release.
- Purity
- ≥ 99% by reverse-phase HPLC
- Identity
- Confirmed by ESI-MS mass spectrometry
- Endotoxin
- < 0.5 EU/mg (LAL assay)
- Third-Party COA
- Verum Analytics (Switzerland) — batch-matched
- Origin
- Solid-phase peptide synthesis (SPPS), Fmoc chemistry
- Presentation
- Lyophilized white powder, septum-sealed vial
- Storage
- Refrigerate 2–8 °C; long-term −20 °C, protect from light
- Batch Traceability
- Every vial tied to a lot number & verification code
Frequently Asked Questions
What is a research peptide?▾
A research peptide is a synthetically manufactured peptide sequence supplied for laboratory use in in-vitro assays, cell-culture experiments, and preclinical animal-model research. Research peptides are not pharmaceuticals — they are not FDA-approved for any therapeutic indication, are not sold as supplements, and are not intended for human or veterinary consumption.
How pure are BioInfinity research peptides?▾
Every peptide we ship is ≥99% pure by reverse-phase HPLC, identity-confirmed by ESI-MS, and endotoxin-tested below 0.5 EU/mg by LAL. The exact assay values for the batch you receive are on the third-party COA included with the shipment.
Where does the third-party COA come from?▾
Verum Analytics in Switzerland — an independent contract-testing laboratory. Every batch we release goes to Verum for HPLC purity + MS identity confirmation. The resulting COA is publicly browsable in our /coa-library with no login required.
Do research peptides need special storage?▾
Yes. Lyophilized (freeze-dried) peptides are stable refrigerated at 2–8 °C for normal-use timeframes and long-term at −20 °C protected from light. Once reconstituted with bacteriostatic water, refrigerate at 2–8 °C and use within 3–4 weeks per general peptide-handling literature; avoid freeze/thaw cycles.
Are these research peptides legal to purchase in the USA?▾
Yes — research chemicals supplied for laboratory use are legal to purchase in the United States when properly labeled as "for research use only" and not intended for human consumption. That is exactly how BioInfinity supplies them.
Related Research Peptides
Frequently sourced together by research groups.
Ready to Order?
Same-day shipping from our Manhattan facility. Third-party Certificate of Analysis included with every shipment.
All products sold by BioInfinity are supplied strictly for in-vitro laboratory research use only. They are not FDA-approved for any therapeutic indication and are not intended for human or veterinary use.