This page is a glossary of 69 peptide-research terms maintained by Compound Lab, a research-grade peptide supplier in Bangkok, Thailand. It covers 42 research peptides organised by function (healing and recovery, growth hormone axis, longevity and anti-aging, metabolic and weight, skin and pigmentation, sexual and reproductive, cognitive and neuro, immune and anti-inflammatory, blends) and 27 laboratory terms (pharmacology basics, administration and handling, testing and quality, manufacturing and synthesis, receptors and pathways, chemistry and engineering, logistics). Each peptide entry links to peer-reviewed PubMed studies and notes the independent lab-testing methodology applied: HPLC for purity, LC-MS for identity, ICP-MS for heavy metals on SPPS-made peptides, LAL endotoxin testing for biologically-produced peptides. All products are sold for research use only. JavaScript is required for the interactive search and filter; the complete static listing follows below.
Peptides (42)
BPC-157
Body Protection Compound 157, a stable pentadecapeptide (15 amino acids) derived from a protein found in gastric juice.
Full article →TB-500 (Thymosin Beta-4)
A synthetic version of Thymosin Beta-4 (Tβ4), a 43-amino-acid protein that occurs naturally in most human cells.
Full article →GHK-Cu (Copper Peptide)
Glycyl-L-Histidyl-L-Lysine, a copper-binding tripeptide present in human blood plasma, bound here to a copper ion.
Full article →Ipamorelin
A selective growth-hormone secretagogue made of five amino acids.
Full article →CJC-1295
A synthetic analogue of growth-hormone-releasing hormone (GHRH). The DAC version binds albumin, stretching its half-life from minutes to days.
Full article →Sermorelin
A 29-amino-acid fragment of GHRH that matches its biologically active portion.
GHRP-2
Growth Hormone Releasing Peptide-2, a synthetic hexapeptide secretagogue.
GHRP-6
Growth Hormone Releasing Peptide-6, one of the first synthetic GH secretagogues studied.
Epithalon (Epithalamin)
A synthetic tetrapeptide (Ala-Glu-Asp-Gly) modelled on a pineal-gland peptide, developed by Vladimir Khavinson.
Full article →PT-141 (Bremelanotide)
Bremelanotide, a melanocortin-receptor agonist (MC1R/MC4R) that acts on the central nervous system.
Full article →Melanotan II
A synthetic cyclic analogue of alpha-melanocyte-stimulating hormone (alpha-MSH).
AOD-9604
A modified fragment of human growth hormone (the 176-191 region).
Semaglutide
A GLP-1 receptor agonist with a fatty-acid modification that gives it a long half-life.
Full article →Tirzepatide
A dual GIP and GLP-1 receptor agonist of 39 amino acids.
Full article →LL-37
The only known human cathelicidin peptide, a 37-residue part of the innate immune system.
KPV
A tripeptide (Lys-Pro-Val) that is the C-terminal fragment of alpha-MSH.
Full article →Hexarelin
A potent synthetic GH secretagogue of six amino acids.
PEG-MGF (Pegylated MGF)
Pegylated Mechano Growth Factor, a splice variant of IGF-1 with a polyethylene-glycol tag that extends its half-life.
SS-31 (Elamipretide)
A mitochondria-targeted tetrapeptide that concentrates in the inner mitochondrial membrane.
NAD+ (Nicotinamide Adenine Dinucleotide)
A coenzyme present in every living cell. Strictly a small molecule, not a peptide, though it is often grouped with research peptides.
Full article →Selank
A synthetic heptapeptide based on the immune peptide tuftsin, modified for stability.
DSIP (Delta Sleep-Inducing Peptide)
A nine-amino-acid peptide first isolated from the blood of sleeping rabbits.
Semax
A synthetic heptapeptide derived from a fragment of ACTH, with added residues for stability.
MOTS-c
A 16-amino-acid mitochondrial-derived peptide encoded within mitochondrial DNA.
Tesamorelin
A stabilized 44-amino-acid analogue of growth-hormone-releasing hormone (GHRH).
IGF-1 LR3
Long R3 IGF-1, an 83-amino-acid analogue of insulin-like growth factor 1 with a longer half-life and reduced binding-protein affinity.
Mod-GRF (1-29)
A short-acting GHRH fragment (the first 29 residues) with four stabilizing substitutions. Also called CJC-1295 without DAC; without the DAC group it mimics natural pulsatile GHRH.
Thymosin Alpha-1
Thymalfasin, a 28-amino-acid acetylated peptide derived from prothymosin alpha, made in the thymus.
Retatrutide
A once-weekly synthetic peptide that activates three receptors at once: GIP, GLP-1 and glucagon.
Cagrilintide
A long-acting analogue of the hormone amylin, designed for once-weekly dosing.
5-Amino-1MQ
A small-molecule inhibitor of the enzyme NNMT. Despite being sold alongside peptides, it is a quinolinium salt, not a peptide.
Kisspeptin-10
A ten-amino-acid fragment of kisspeptin, the protein made by the KISS1 gene.
Gonadorelin
A synthetic decapeptide identical to natural gonadotropin-releasing hormone (GnRH).
Oxytocin
A nine-amino-acid cyclic neuropeptide made in the hypothalamus, sometimes called the bonding hormone.
Tesofensine
A small-molecule triple monoamine reuptake inhibitor, not a peptide, repurposed from neurology research toward obesity.
Adipotide
A fat-targeting peptidomimetic that pairs a homing sequence with a cell-death-triggering sequence.
Follistatin
A 344-residue glycoprotein that binds and blocks myostatin and activins, proteins that limit muscle growth.
Melanotan I
Afamelanotide, a 13-amino-acid analogue of alpha-MSH and the first melanocortin-1 receptor agonist of its kind.
Cerebrolysin
A standardized mixture of low-weight peptides and amino acids made by enzymatic breakdown of pig brain protein. It is a defined extract, not a single peptide.
Thymulin
A nine-amino-acid thymic hormone that is only active when bound to zinc.
GLOW Blend
A research blend of three repair-focused peptides: GHK-Cu, BPC-157 and TB-500.
KLOW Blend
GLOW plus KPV: GHK-Cu, BPC-157, TB-500 and the anti-inflammatory tripeptide KPV.
Terminology (27)
Amino Acid
Nelson & Cox â Lehninger Principles of Biochemistry (NIH Bookshelf)
Bioavailability
Lau & Dunn (2018) â Therapeutic Peptides: Historical Perspectives and Future Directions
Half-Life
Werle & Bernkop-Schnürch (2006) â Strategies to Improve Plasma Half-Life of Peptide Drugs
Subcutaneous (SC)
Heise et al. (2014) â Subcutaneous Absorption of Insulin and Peptides
Intramuscular (IM)
Greenblatt & Koch-Weser (1976) â Intramuscular Injection of Drugs (NEJM)
Lyophilized (Freeze-Dried)
Wang (2000) â Lyophilization and Development of Solid Protein Pharmaceuticals
Reconstitution
Wang & Jiang (2019) â Peptide and Protein Formulation: Physical and Chemical Stability
Bacteriostatic Water
USP â Injections and Implanted Drug Products
CoA, Certificate of Analysis
ICH Q6A â Specifications: Test Procedures and Acceptance Criteria
Peptide Bond
Stryer et al. â Biochemistry: Peptide Bonds (NIH Bookshelf)
HPLC
ICH Q2(R2) â Validation of Analytical Procedures
Mass Spectrometry (LC-MS)
ICH Q6A â Specifications: Test Procedures
ICP-MS / Heavy Metals
ICH Q3D / USP <232> and <233> â Elemental Impurities
LAL Endotoxin Test
USP <85> â Bacterial Endotoxins Test
SPPS (Solid-Phase Peptide Synthesis)
Merrifield (1963) â Solid Phase Peptide Synthesis (J. Am. Chem. Soc.)
Recombinant
FDA â What Are Biologics (CBER)
Acetate Salt / Net Peptide Content
USP â Peptide Content and Counterions
GLP-1
Endotext â Incretin Physiology (NIH Bookshelf)
GIP
Endotext â Incretin Physiology (NIH Bookshelf)
GHRH
Endotext â Growth Hormone Axis (NIH Bookshelf)
Ghrelin Receptor (GHSR)
Endotext â Ghrelin and the GHS Receptor (NIH Bookshelf)
Secretagogue
Endotext â Growth Hormone Secretagogues (NIH Bookshelf)
DAC (Drug Affinity Complex)
Teichman et al. (2006) â CJC-1295 (DAC) Prolongs GH and IGF-I
PEGylation
Werle & Bernkop-Schnürch (2006) â Strategies to Improve Plasma Half-Life of Peptide Drugs
Blood-Brain Barrier
NCBI Bookshelf â The Blood-Brain Barrier
IU (International Units)
WHO â International Biological Reference Standards
Cold Chain
WHO â Cold Chain and Vaccine / Biologic Storage Guidance