For research use only. Not for human use. DefinePeps supplies lyophilised peptides to verified researchers for in-vitro laboratory study. Nothing on this site is for human or veterinary use, and nothing here is medical advice.
Catalogue
Every compound we stock, grouped by research area. Prices are per vial; 10-vial kits are 15% lower. Click a compound to buy.
Most requested compounds
Incretin and amylin analogues
Semaglutide
GLP-1 receptor agonist peptide, 31 amino acids, acylated with a C18 diacid, supplied lyophilised.
2 mg, 5 mg, 10 mg, 15 mg, 20 mg, 30 mg
From $49 $39 per vial
Incretin and amylin analogues
Tirzepatide
Dual GIP/GLP-1 receptor agonist peptide, 39 amino acids, C20 diacid-acylated, supplied lyophilised.
5 mg, 10 mg, 15 mg, 20 mg, 30 mg, 40 mg, 50 mg, 60 mg, 100 mg
From $99 $79 per vial
Incretin and amylin analogues
Retatrutide
Triple GIP/GLP-1/glucagon receptor agonist peptide, 39 amino acids, supplied lyophilised.
5 mg, 10 mg, 15 mg, 20 mg, 30 mg, 40 mg, 50 mg, 60 mg, 100 mg
From $124 $99 per vial
BPC and thymosin peptides
BPC-157
Synthetic pentadecapeptide, a fragment of the gastric protein Body Protection Compound, lyophilised.
5 mg, 10 mg, 20 mg
From $74 $59 per vial
BPC and thymosin peptides
TB-500
Synthetic fragment of thymosin beta-4, a 43-residue actin-binding peptide, supplied lyophilised.
5 mg, 10 mg
From $86 $69 per vial
GHRH and GHRP analogues
Ipamorelin
Synthetic pentapeptide and selective ghrelin receptor (GHS-R1a) agonist, supplied lyophilised.
5 mg, 10 mg
From $61 $49 per vial
GHRH and GHRP analogues
CJC-1295 (no DAC)
Modified GRF 1-29, a 29-residue GHRH analogue with four amino-acid substitutions, lyophilised.
5 mg, 10 mg
From $86 $69 per vial
GHRH and GHRP analogues
Tesamorelin
44-residue GHRH analogue with an N-terminal trans-3-hexenoyl group, supplied lyophilised.
5 mg, 10 mg, 20 mg
From $136 $109 per vial
Copper and melanocortin peptides
GHK-Cu
Copper(II) complex of the tripeptide Gly-His-Lys, supplied as a blue lyophilised powder.
50 mg, 100 mg
From $86 $69 per vial
Neuropeptides
Semax
Synthetic heptapeptide analogue of ACTH(4-10) with a C-terminal Pro-Gly-Pro extension, lyophilised.
5 mg, 10 mg, 30 mg
From $74 $59 per vial
Neuropeptides
Selank
Synthetic heptapeptide analogue of tuftsin with a C-terminal Pro-Gly-Pro extension, lyophilised.
5 mg, 10 mg, 30 mg
From $61 $49 per vial
Mitochondrial and bioregulator peptides
MOTS-c
16-residue mitochondrial-derived peptide encoded in the 12S rRNA region of mtDNA, lyophilised.
10 mg, 20 mg, 40 mg
From $99 $79 per vial
Incretin and amylin analogues
Semaglutide, tirzepatide, retatrutide, cagrilintide and related GLP-1, GIP and amylin receptor peptides.
| Compound | Strengths | From (per vial) |
|---|---|---|
| Semaglutide | 2 mg, 5 mg, 10 mg, 15 mg, 20 mg, 30 mg | |
| Tirzepatide | 5 mg, 10 mg, 15 mg, 20 mg, 30 mg, 40 mg, 50 mg, 60 mg, 100 mg | |
| Retatrutide | 5 mg, 10 mg, 15 mg, 20 mg, 30 mg, 40 mg, 50 mg, 60 mg, 100 mg | |
| Cagrilintide | 5 mg, 10 mg | |
| Cagrilintide + Semaglutide | 5 mg, 10 mg | |
| Retatrutide + Cagrilintide | 10 mg | |
| Mazdutide | 10 mg | |
| Survodutide | 10 mg | |
| AOD-9604 | 5 mg, 10 mg | |
| 5-Amino-1MQ | 5 mg, 10 mg, 50 mg | |
| Adipotide | 5 mg | |
| Lipo-C with B12 | 10 mL | |
| L-Carnitine | 10 mL |
BPC and thymosin peptides
BPC-157, TB-500, KPV, LL-37 and related regulatory peptides.
| Compound | Strengths | From (per vial) |
|---|---|---|
| BPC-157 | 5 mg, 10 mg, 20 mg | |
| TB-500 | 5 mg, 10 mg | |
| BPC-157 + TB-500 | 10 mg, 20 mg | |
| KPV | 5 mg, 10 mg, 30 mg | |
| LL-37 | 5 mg | |
| ARA-290 | 10 mg, 40 mg | |
| Thymosin Alpha-1 | 5 mg, 10 mg | |
| VIP | 5 mg, 10 mg | |
| KLOW blend | 80 mg |
GHRH and GHRP analogues
Ipamorelin, CJC-1295, tesamorelin, sermorelin and related secretagogue-class peptides.
| Compound | Strengths | From (per vial) |
|---|---|---|
| Ipamorelin | 5 mg, 10 mg | |
| CJC-1295 (no DAC) | 5 mg, 10 mg | |
| CJC-1295 (with DAC) | 5 mg | |
| CJC-1295 + Ipamorelin | 10 mg | |
| Tesamorelin | 5 mg, 10 mg, 20 mg | |
| Tesamorelin + Ipamorelin | 10 mg, 20 mg | |
| Sermorelin | 5 mg, 10 mg | |
| GHRP-2 | 5 mg | |
| GHRP-6 | 5 mg, 10 mg | |
| IGF-1 LR3 | 0.1 mg, 1 mg |
Neuropeptides
Semax, Selank, DSIP, Pinealon and related neuroactive peptide sequences.
| Compound | Strengths | From (per vial) |
|---|---|---|
| Semax | 5 mg, 10 mg, 30 mg | |
| Selank | 5 mg, 10 mg, 30 mg | |
| Semax + Selank | 20 mg | |
| DSIP | 5 mg, 15 mg | |
| PE-22-28 | 10 mg | |
| Pinealon | 5 mg, 10 mg, 20 mg | |
| Cerebrolysin | 60 mg | |
| Adamax | 10 mg |
Mitochondrial and bioregulator peptides
MOTS-c, SS-31, epithalon, NAD+ and related cellular-signalling compounds.
| Compound | Strengths | From (per vial) |
|---|---|---|
| NAD+ | 100 mg, 500 mg, 1000 mg | |
| MOTS-c | 10 mg, 20 mg, 40 mg | |
| SS-31 | 10 mg, 50 mg | |
| Epithalon | 10 mg, 25 mg, 50 mg | |
| Humanin | 10 mg | |
| Thymalin | 10 mg | |
| Vesugen | 10 mg, 20 mg | |
| Cartalax | 20 mg | |
| Cortagen | 20 mg |
Copper and melanocortin peptides
GHK-Cu, AHK-Cu, Snap-8, Melanotan and related research compounds.
| Compound | Strengths | From (per vial) |
|---|---|---|
| GHK-Cu | 50 mg, 100 mg | |
| AHK-Cu | 100 mg | |
| Snap-8 | 10 mg, 20 mg | |
| Glutathione | 1500 mg | |
| GLOW blend | 70 mg | |
| Melanotan I | 10 mg | |
| Melanotan II | 10 mg | |
| Lemon Bottle | 10 mg | |
| Hyaluronic acid | 5 mg |
Peptide hormone analogues
Kisspeptin-10, PT-141, oxytocin, hCG and related hormone-analogue peptides.
| Compound | Strengths | From (per vial) |
|---|---|---|
| Kisspeptin-10 | 5 mg, 10 mg | |
| PT-141 | 10 mg | |
| Oxytocin | 2 mg | |
| hCG | 5000 IU, 10000 IU |
Lab essentials
Reconstitution solvents and consumables.
| Compound | Strengths | From (per vial) |
|---|---|---|
| Bacteriostatic water | 3 mL, 10 mL | |
| Sterile water | 3 mL, 10 mL | |
| Acetic acid 0.6% | 3 mL, 10 mL | |
| Vitamin B12 | 10 mL |