Research Peptide Guides: Structure, Mechanism & Published Research
A plain-English reference to the research peptides we supply: what each compound is, how its mechanism is described in the published literature, what the evidence does and does not show, and its regulatory status in the UK.
Each guide includes chemical data, references to peer-reviewed research and links to the batch-tested product. New guides are added regularly.
For in vitro research use only. Not for human or animal use. Nothing on these pages is medical advice.
Six research areas, one library
Tissue repair & regeneration
BPC-157 · TB-500 · GHK-Cu · KPV
4 guides →
02 / Research area
Neuropeptides & immune
Selank · Thymosin Alpha-1 · Epithalon · PT-141
4 guides → 03 / Research areaMetabolic & incretin
Retatrutide · Tirzepatide · Cagrilintide
3 guides → 04 / Research areaGrowth-hormone axis
Tesamorelin · Ipamorelin · CJC-1295
4 guides → 05 / Research areaMitochondrial & cellular energy
MOTS-c · SS-31 · NAD+
3 guides → 06 / Research areaResearch blends
GLOW · KLOW
2 guides →Tissue repair & regeneration
Peptides studied in wound-healing, tissue-remodelling and cell-migration models.
BPC-157
Stable 15-amino-acid peptide derived from a gastric-juice protein.
Read the guide →TB-500
Actin-binding peptide studied in cell-migration and repair models.
Read the guide →GHK-Cu
Copper-binding tripeptide studied in collagen and gene-expression research.
Read the guide →KPV
C-terminal tripeptide of alpha-MSH (Lys-Pro-Val), studied in inflammation models.
Read the guideGrowth-hormone axis
GHRH analogues and ghrelin-receptor agonists studied for their effects on growth hormone release.
Tesamorelin
Stabilised GHRH analogue with the most clinical data in its class.
Read the guide →Ipamorelin
Selective ghrelin-receptor (GHS-R1a) agonist pentapeptide.
Read the guide →CJC-1295 (no DAC)
Enzyme-resistant 29-amino-acid GHRH analogue with a short, pulse-like action.
Read the guide →CJC-1295 with DAC
Long-acting GHRH analogue that binds albumin, extending its half-life to days.
Read the guideMetabolic & incretin research
Receptor agonists studied in metabolic, appetite and energy-balance pathways.
Retatrutide
Triple agonist of the GIP, GLP-1 and glucagon receptors.
Read the guide →Tirzepatide
Dual agonist of the GIP and GLP-1 receptors.
Read the guide →Cagrilintide
Dual amylin and calcitonin receptor agonist studied in appetite regulation.
Read the guideMitochondrial & cellular energy
Compounds studied in mitochondrial function and cellular energy metabolism.
MOTS-c
16-amino-acid peptide encoded in mitochondrial DNA, studied in AMPK signalling.
Read the guide →SS-31
Cell-permeable tetrapeptide that targets cardiolipin in the inner mitochondrial membrane.
Read the guide →NAD+
Central coenzyme in redox reactions and sirtuin research.
Read the guideNeuropeptides, immune & other
Peptides studied in neuro-signalling, immune modulation and ageing research.
Selank
Synthetic heptapeptide analogue of the immunomodulatory peptide tuftsin.
Read the guide →Thymosin Alpha-1
28-amino-acid thymic peptide studied in immune-response research.
Read the guide →Epithalon
Synthetic tetrapeptide (Ala-Glu-Asp-Gly) studied in telomere and ageing research.
Read the guide →PT-141
Cyclic melanocortin-receptor agonist derived from alpha-MSH.
Read the guideResearch blends
Multi-peptide lyophilised blends. See each single-compound guide for background.
Comparisons & further reading
Side-by-side research comparisons and background articles.
Retatrutide vs Tirzepatide
How the triple and dual incretin agonists differ in structure, receptors and published research.
Read the comparison →What are research peptides?
An introduction to research-grade peptides and how they are used in laboratory work.
Read the article →Quality & testing
How every batch is independently tested for purity before release.
Learn moreThese guides are for scientific information only. Sterling Peptides Ltd supplies all compounds strictly for in vitro laboratory research. Not for human or animal use, and not for diagnostic or therapeutic purposes.