USA-based research peptide supplier

Lab-tested peptides, verified before they ship.

Tested, verified, and shipped so your research is the only variable that matters. Every compound is third-party HPLC-MS tested at 99%+ purity, with a published certificate of analysis you can check before you buy.

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HPLC-MS tested
COA on every batch
Free tracked shipping

48 compounds · sourced from the Peptide Atlas

99%+

Verified purity

Research compounds

2–3 day

US delivery

HPLC-MS

On every batch

Best sellers

Researcher favorites.

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99.73% HPLC-MS

Melanotan-2

Nonselective melanocortin receptor agonist

$40

10 mg vial

99.77% HPLC-MS

BPC-157 / TB-500 (Wolverine)

Tissue repair and cytoprotection research peptide

$100 – $125

2 sizes

Select options

99.66% HPLC-MS

BPC-157

Tissue repair and cytoprotection research peptide

$50 – $95

3 sizes

Select options

99.82% HPLC-MS

GHK-Cu

Copper-binding matrikine and cosmetic peptide

$55 – $65

2 sizes

Select options

99.80% HPLC-MS

MOTS-c

Mitochondrial-derived peptide

$65 – $155

3 sizes

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99.04% HPLC-MS

Tesamorelin

Stabilized GHRH analogue

$85 – $125

2 sizes

Select options

99.09% HPLC-MS

Semaglutide

Long-acting GLP-1 receptor agonist

$150 – $205

2 sizes

Select options

99.81% HPLC-MS

Ipamorelin

Ghrelin receptor agonist and GH secretagogue

$65 – $85

2 sizes

Select options

Browse by category

Find your compound.

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Research Peptides

Single-sequence research peptides, HPLC-MS verified.

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Peptide Blends

Pre-combined multi-peptide research formulations.

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Copper Peptides

Copper-complexed peptides for matrix and repair research.

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Melanocortin Peptides

Melanocortin-receptor research peptides.

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Bioregulator Peptides

Short regulatory peptides (Khavinson-class) for signalling research.

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Cofactors & Coenzymes

Metabolic cofactors and coenzymes for benchtop work.

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Testing & transparency

Tested, then published — not the other way around.

Purity claims are only as good as the paper behind them. We publish the actual chromatograms and mass data for the exact batch in your order.

Independent, US-based lab
Every lot is tested by a third-party laboratory — never in-house marketing numbers.
HPLC-UV + mass identification
Purity by chromatography and identity by mass spectrometry, published in full.
Batch-matched COA
Scan the lot number on your vial to pull its exact certificate of analysis.

Verify a certificate →

Certificate of Analysis

BPC-157 · 10 mg

99.4% HPLC-MS

Batch: PH-4821
Method: HPLC-MS
Released: 2026-07

How it works

From bench to bench, without the guesswork.

Browse & verify

Compare compounds with real specs and evidence grades, and check the COA before you add to cart.

Order & we fulfill

Create your research account and check out. Orders are picked, packed, and QC'd at our US facility.

Tracked delivery

Insulated, protective packaging with dispatch-to-door tracking and 2–3 day US delivery.

Backed by evidence

Every product links to the Peptide Atlas.

Pepper's catalog is built on the Peptide Reference Atlas — 350 compounds with sequences, mechanisms, graded evidence and source-linked claims. Read the science, then source the material. No hype, evidence grades kept in view.

Explore the Atlas

New compounds & batch releases

Join the research list for new-compound announcements, restocks, and COA releases.

Lab-tested research peptides, verified before they ship. · support@pepperbioscience.com

All products are sold for laboratory research, analytical, and in-vitro experimentation purposes only. Not for human or animal consumption of any kind.