Research Articles

A detailed UK guide covering what research peptides are, how they’re studied, purity standards, COAs, storage, and Research-Use-Only.

A comprehensive guide to reconstituting lyophilised research peptides using bacteriostatic water and acetic acid water, covering reconstitution protocols, storage conditions, and quality control for research laboratory settings.

Glutathione (GSH) is the most abundant endogenous low-molecular-weight thiol, functioning as the primary non-enzymatic antioxidant and substrate for GPx and GST enzymes. This guide covers redox biology research applications, GSH/GSSG measurement, and oxidative stress models.

Matrixyl is a lipopeptide derived from the procollagen type I C-propeptide signalling domain. This guide covers the KTTKS pharmacophore, fibroblast ECM biology, and comparison with GHK-Cu in collagen synthesis research.

Cartalax (Ala-Glu-Asp-Leu) is a synthetic tetrapeptide bioregulator derived from cartilage tissue, developed by Khavinson for musculoskeletal research. This guide covers chondrocyte biology, osteoarthritis research models, and cartilage tissue engineering applications.

PNC-27 is a synthetic 32 amino acid peptide derived from the MDM2-binding domain of p53, proposed to selectively target surface HDM2 on cancer cells. This guide covers the proposed mechanism, experimental design, and critical controls for cancer cell selectivity research.

Adamax (Dihexa) is a peptidomimetic derived from angiotensin IV that potentiates hepatocyte growth factor signalling through c-Met at picomolar concentrations. This guide covers the HGF/c-Met mechanism, synaptogenesis research, and IRAP pharmacology.

Snap-8 is a synthetic octapeptide derived from SNAP-25 designed to competitively inhibit SNARE complex assembly. This guide covers SNARE complex biology, neurotransmitter release assays, and comparison with Argireline and botulinum toxin research.

AHK-Cu (Ala-His-Lys copper complex) is a synthetic copper-chelating tripeptide sharing the ATCUN motif with GHK-Cu. This guide covers copper coordination chemistry, comparative pharmacology with GHK-Cu, and research applications in fibroblast biology.

Pinealon (Glu-Asp-Arg) is a synthetic tripeptide bioregulator targeting the pineal gland and cerebral cortex, developed by Khavinson. This guide covers neuroprotection mechanisms, circadian biology research, and comparative bioregulator study design.

Vilon (Lys-Glu) is a synthetic dipeptide bioregulator developed by Khavinson from thymic tissue. As the smallest bioregulator in the series, it provides a minimal pharmacophore reference for thymic peptide research. This guide covers immunological research applications.

N-Acetyl Epitalon Amidate is the maximally stabilised form of Epitalon (Ala-Glu-Asp-Gly), providing superior metabolic stability for long-duration telomerase, circadian, and cellular ageing research. This guide covers stability advantages and research applications.

Humanin is a 21 amino acid mitochondria-derived peptide encoded in the MT-RNR2 locus, discovered through screening for factors protecting against Alzheimer disease-related neuronal toxicity. This guide covers receptor pharmacology, neuroprotection mechanisms, and metabolic research applications.

VIP is a 28 amino acid neuropeptide activating VPAC1 and VPAC2 receptors throughout the nervous system, gastrointestinal tract, and immune system. This guide covers receptor pharmacology, SCN circadian biology, and immunomodulation research.

Thymalin is a polypeptide thymic bioregulator developed by Khavinson at the Saint Petersburg Institute of Bioregulation and Gerontology. This guide covers immunological research applications, comparison with Thymosin Alpha-1, and aged immune system research models.

Hexarelin Acetate is the most potent synthetic GHRP series compound, activating GHS-R1a with higher affinity than GHRP-2 or GHRP-6. This guide covers receptor pharmacology, cardiac biology research, and comparative GHRP research design.

Complete guide to the melanocortin peptide research toolkit: MT-1 (MC1R-selective), MT-2 (pan-MCR), and PT-141 (MC4R/CNS). Covers the alpha-MSH parent system, receptor subtype pharmacology, and research tool selection.

AICAR and MOTS-c are mechanistically linked through the same AMPK activation pathway: MOTS-c inhibits folate cycle enzymes causing AICAR accumulation, which then activates AMPK as ZMP. This guide explores this connection for comparative metabolic research design.

Extended guide to Oxytocin research covering OXTR circuit biology in social neuroscience, amygdala pharmacology, vasopressin comparative research, and the neurobiology of prosocial behaviour.

The CJC-1295 No DAC + Ipamorelin blend provides simultaneous dual-receptor GH axis stimulation — GHRHR (cAMP/PKA) via CJC-1295 and GHS-R1a (IP3/calcium/PKC) via Ipamorelin — in a single research preparation.

The Semax + Selank blend combines two Russian neuropeptides with complementary mechanisms — Semax targeting BDNF/dopamine pathways and Selank targeting GABAergic/tuftsin pathways — for dual-system neurochemical research.

NA Selank Amidate is the most stable form of the Selank heptapeptide, with N-terminal acetylation and C-terminal amidation protecting the tuftsin-derived pharmacophore from exopeptidase degradation.

Adipotide (FTPP) is a chimeric proapoptotic targeting peptide studied for selective white adipose tissue vascular biology. It combines a prohibitin-targeting homing domain with a mitochondria-disrupting proapoptotic sequence.

NA Semax Amidate is the most metabolically stable form of the Semax heptapeptide, incorporating N-terminal acetylation and C-terminal amidation to resist exopeptidase degradation while preserving the ACTH(4-10) pharmacophore.

The BPC+TB blend combines BPC-157 (NO/VEGF/FAK-paxillin pathways) and TB-500 (G-actin/LKKTET actin dynamics) for dual-pathway tissue biology research in a single reconstitution.

MGF is an IGF-1 splice variant produced in response to mechanical stress. Its unique C-terminal E-peptide has distinct biological properties from IGF-1R signalling. PEG MGF extends half-life for chronic research models.

MT-2 (Melanotan II) is a synthetic cyclic heptapeptide pan-melanocortin receptor agonist. Its cyclic lactam structure provides activity across MC1R, MC3R, MC4R and MC5R, distinguishing it from selective MT-1 and CNS-focused PT-141.

Dermorphin is a naturally occurring heptapeptide from amphibian skin containing biosynthetic D-alanine — the most potent naturally occurring mu-opioid receptor agonist. Key research tool for MOR pharmacology and D-amino acid biology.

HCG binds and activates the LH/hCG receptor (LHCGR) with high affinity and long half-life, making it the preferred research tool for studying gonadal steroidogenesis and LHCGR pharmacology.

AOD9604 is a synthetic fragment of human growth hormone's C-terminal lipolytic domain, studied for adipocyte biology and fatty acid metabolism research independently of IGF-1 or anabolic GH effects.

Sermorelin Acetate is synthetic GHRH(1-29)-NH2 — the unmodified native GHRH fragment and foundational reference compound for GHRHR pharmacology research.

Oxytocin Acetate is a nonapeptide neurohormone studied for OXTR receptor pharmacology, social behaviour neuroscience, reproductive biology, and comparative pharmacology with vasopressin.

GHRP-2 and GHRP-6 are synthetic hexapeptide GHS-R1a agonists and the foundational growth hormone releasing peptides. Used as reference compounds in GH secretagogue research alongside selective Ipamorelin.

AICAR (acadesine) is a nucleotide analogue and direct AMPK activator — the most widely used tool compound in AMPK biology research. It mechanistically links to MOTS-c through AICAR accumulation as the shared AMPK activation pathway.

DSIP is a naturally occurring nonapeptide studied for sleep electrophysiology, neuroendocrine regulation, HPA axis modulation, and circadian biology. Notable for blood-brain barrier penetration.

Gonadorelin Acetate is synthetic native GnRH — the decapeptide that drives pituitary LH and FSH secretion. Used as the reference GnRHR agonist in HPG axis pharmacology research.

PT-141 (Bremelanotide) is an FDA-approved cyclic heptapeptide MC4R agonist studied for central melanocortin system pharmacology and sexual desire neuroscience research.

Selank is a synthetic heptapeptide derived from tuftsin studied for anxiolytic signalling, GABAergic modulation, BDNF expression, and immunomodulation in laboratory research models.

Epithalon (Epitalon) is a synthetic tetrapeptide studied for telomerase activation, pineal gland function, circadian rhythm regulation, and longevity biology in published research models.

MT-1 (Melanotan I, Afamelanotide) is a synthetic linear alpha-MSH analogue studied for MC1R-selective melanocortin receptor pharmacology, melanogenesis, and UV response research.

GHK-Cu is the fastest growing peptide search term of 2026 with over 1000% year-on-year search growth. This research guide covers its copper coordination chemistry, gene expression biology, and published research.

What does peptide purity mean and how is it measured by HPLC? This guide explains how peptide purity is determined, what 98% purity means in practice, and why it matters for research results.

Why are research peptides supplied as lyophilised powder? This guide explains the freeze-drying process, why it dramatically improves peptide stability, and what researchers need to know about working with lyophilised compounds.

How long do research peptides last? This guide covers storage conditions, stability of lyophilised vs reconstituted peptides, freeze-thaw cycle effects, and specific guidance for common research compounds.

A research overview of the major longevity peptide categories: NAD+ metabolism, mitochondrial peptides (MOTS-c, SS-31), copper peptides (GHK-Cu), and senolytic research tools (FOXO4-DRI).

A research pharmacology comparison of the three generations of incretin receptor agonists: Semaglutide (GLP-1R), Tirzepatide (dual GLP-1R/GIPR), and Retatrutide (triple GLP-1R/GIPR/GCGR).

Ipamorelin and CJC-1295 act at complementary receptors in the GH axis — GHS-R1a and GHRHR respectively. This research guide examines their distinct mechanisms, receptor pharmacology, and how they are studied together.

BPC-157 and TB-500 are among the most studied peptides in tissue biology research. This guide examines their distinct mechanisms, published research, and how they are used together in laboratory settings.

Step-by-step guide to reconstituting lyophilised research peptides. Covers solvent selection, concentration calculations, sterile technique, and storage after reconstitution.

A complete visual reference guide for research peptide powder appearance. Covers expected colours for 24 peptides including why GHK-Cu is blue-green, why 5-Amino-1MQ is yellow, and what colour changes may indicate about product integrity.