Every one of these is a signal

living cells already send.

We just make it measurable.

RESEARCH-GRADE PEPTIDES

Signals the cell already knows how to read.

Six compounds. Documented mechanisms, honest evidence, and no claims we can’t cite.

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GLY–HIS–LYS · Cu²⁺

GHK-Cu 100mg

MW 403.9 · TRIPEPTIDE–COPPER COMPLEX

Copper-binding tripeptide found naturally in plasma. Studied in cell and tissue models for its effects on collagen and elastin synthesis, and for antioxidant and anti-inflammatory activity.

Copper-binding plasma tripeptide, studied in collagen and tissue-remodelling models.

TOPICAL STUDIES ONLY · NOT APPROVED

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GEPPPGKPADDAGLV

BPC-157 10mg

MW 1419.5 · 15 RESIDUES · PENTADECAPEPTIDE

Synthetic peptide derived from a protein in gastric juice. Studied for accelerating repair of tendon, ligament, muscle and gut tissue by promoting new blood vessel formation. Evidence is animal-based; no completed clinical trials.

Gastric peptide studied for tendon, muscle and gut repair in animal models.

ANIMAL DATA ONLY · NO CLINICAL TRIALS

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LKKTETQ

TB-500 10mg

MW 889.0 · THYMOSIN β4 ACTIVE FRAGMENT

Synthetic fragment of thymosin beta-4, a cell-migration protein. Studied in animal models of tissue repair and inflammation. Animal and veterinary data only; no completed clinical trials.

The active fragment of thymosin β4, a cell-migration protein studied in tissue repair.

ANIMAL & VETERINARY DATA ONLY

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LY3437943

Retatrutide 10mg

MW 4731 · GLP-1 / GIP / GLUCAGON TRIAGONIST

Investigational triple GLP-1 / GIP / glucagon receptor agonist in clinical development by Eli Lilly. Phase 2 results are published and Phase 3 is ongoing. Not approved in any jurisdiction.

Triple GLP-1 / GIP / glucagon receptor agonist. Investigational; Phase 3 ongoing.

INVESTIGATIONAL · NOT APPROVED IN ANY JURISDICTION

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trans-3-HEXENOYL-hGRF(1–44)-NH₂

Tesamorelin 20mg

MW 5135.9 · 44 RESIDUES · GHRH ANALOGUE

Synthetic analogue of growth-hormone-releasing hormone (GHRH), stabilised against the enzyme that clears the native peptide within minutes. Approved in the United States for HIV-associated lipodystrophy, and the only compound listed here that any regulator has licensed.

A stabilised GHRH analogue, and the only compound here any regulator has approved.

APPROVED MEDICINE · ONE INDICATION

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MRWQEMGYIFYPRKLR

MOTS-c 40mg

MW 2174.6 · 16 RESIDUES · MITOCHONDRIAL-DERIVED PEPTIDE

Sixteen-residue peptide encoded inside the mitochondrial 12S rRNA gene rather than the nuclear genome. Studied as a regulator of metabolic homeostasis through AMPK activation. Interventional evidence is rodent; the rest is observational.

A peptide written in mitochondrial DNA, studied as a regulator of metabolism.

ANIMAL DATA · OBSERVATIONAL STUDIES

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What this site is, and what it isn’t.

Scope

Quadra Biotech supplies reference materials to laboratories, universities and contract research organisations. Everything listed here is sold for in vitro laboratory research use. Nothing on this site is offered for human or veterinary consumption, and nothing here is medical advice.

Evidence

Each compound carries its evidence status in the same viewport as its name: approved, topical, investigational, animal or veterinary. Where the literature is thin, we say so. Where a mechanism is described, it is cited to a primary source you can read yourself.

Limits

We publish no dosing, no administration routes and no protocols. Storage and reconstitution conditions only. Five of the six compounds listed are unapproved by regulators in every jurisdiction, and the sixth is approved for one indication only; approval status is stated on every product.

Quadra Biotech makes no therapeutic claims. The descriptions on this site summarise published research and are not statements of efficacy or safety. Checkout is disabled pending confirmation of jurisdictional supply restrictions.