The peptide research library
Molecular profiles, reconstitution chemistry, storage, and analytical testing for every compound we manufacture — plus head-to-head comparisons and lab-methods guides. Written as a precise scientific reference, for laboratory research use only.
Semaglutide vs Tirzepatide vs Retatrutide
Structural and receptor comparison of semaglutide, tirzepatide and retatrutide: one, two and three targets plus lipidation. For laboratory research use only.
Compare →ComparisonBPC-157 vs TB-500
BPC-157 and TB-500 compared: a 15 residue gastric sequence against the 7 residue acetylated thymosin beta-4 fragment. For laboratory research use only.
Compare →ComparisonSemax vs Selank
Semax and Selank compared: an ACTH derived heptapeptide against a tuftsin analog, the shared Pro-Gly-Pro tail, and pathways. For laboratory research use only.
Compare →ComparisonCJC-1295 vs Ipamorelin
CJC-1295 and ipamorelin compared: a GHRH analog against a ghrelin receptor agonist, the DAC question, and why a blend exists. For laboratory research use only.
Compare →ComparisonIpamorelin vs Sermorelin
Ipamorelin and sermorelin compared: two different receptors, a fivefold size gap, and how each behaves in pituitary models. For laboratory research use only.
Compare →ComparisonMelanotan 1 vs Melanotan 2
Melanotan 1 and melanotan 2 compared: a linear alpha-MSH analog against a cyclic one, receptor selectivity and stability. For laboratory research use only.
Compare →ComparisonTesamorelin vs Sermorelin
Tesamorelin and sermorelin compared: GRF(1-44) with a hexenoic acid group against GRF(1-29), size, and DPP-4 stability. For laboratory research use only.
Compare →ComparisonGLOW vs KLOW
GLOW and KLOW compared: the same GHK-Cu, BPC-157 and TB-500 vial with KPV added in one, and what KPV is studied for. For laboratory research use only.
Compare →ComparisonNAD+ vs MOTS-c vs SS-31
NAD+, MOTS-c and SS-31 compared: a coenzyme, a mitochondrial derived peptide and a cardiolipin binding tetrapeptide. For laboratory research use only.
Compare →ComparisonPT-141 vs Melanotan 2
PT-141 and melanotan 2 compared: an analog one functional group apart, MC4R focus against broad melanocortin binding. For laboratory research use only.
Compare →How to Read a Peptide Certificate of Analysis
A COA is only useful if you know what each line proves and what it leaves out. Here is how to read one, section by section.
Read →GuideHPLC Purity Explained: What 99% Actually Measures, and What It Doesn't
The purity number on every vendor's page comes from one instrument and one calculation. Here is what it is really telling you.
Read →GuideMass Spectrometry for Peptide Identity: How LC-MS Proves What Is in the Vial
HPLC tells you a sample is clean. Mass spectrometry tells you what it is. Here is how the measurement works and how to read the number it produces.
Read →GuideNet Peptide Content vs Purity: Why a 99% Pure Vial Is Not 99% Peptide by Weight
Purity asks what kind of peptide. Net content asks how much of the powder is peptide at all. Two numbers, two questions, and only one of them is usually advertised.
Read →GuideReconstituting Lyophilized Peptides: The Math, Step by Step
Vial mass, diluent volume, final concentration. The arithmetic every lab does before the first sample, worked through with examples.
Read →GuideBacteriostatic Water vs Sterile Water for Peptide Research
Both are water. One has 0.9% benzyl alcohol. That small difference decides how long a reconstituted vial stays usable.
Read →GuidePeptide Storage and Stability: Lyophilized vs Reconstituted, Temperature, Light and Freeze-Thaw
A sealed vial of powder and an opened vial of solution are two different materials with two different shelf lives. Here is what governs each.
Read →GuideBeyond Purity: Endotoxin, Sterility and Heavy-Metal Testing for Research Peptides
A 99% purity figure is blind to bacteria, endotoxin, metals and residual solvent. These are the four tests that cover what HPLC cannot.
Read →GuideWhat Is Lyophilization? Why Research Peptides Ship as Freeze-Dried Powder
Freezing, sublimation, then desorption. How a peptide solution becomes a dry cake that holds up on a shelf, and what that cake tells you before the vial is opened.
Read →Retatrutide
Retatrutide is a synthetic long-acting peptide (CAS 2381089-83-2, formula C256H392N64O79, average mass 4731.2) described in the published literature as a single chain agonist at three related receptors. It is supplied as a lyophilized powder in a sealed vial for laboratory research use only.
Read reference →CompoundRetatrutide / Cagrilintide
This item is a co-lyophilized blend of two separate peptides, retatrutide and cagrilintide, presented together in one sealed vial. It is supplied as a dry powder for laboratory research use only.
Read reference →CompoundSemaglutide
Semaglutide is a synthetic acylated analogue of glucagon-like peptide 1 (CAS 910463-68-2, formula C187H291N45O59, average mass 4113.58) widely used as a reference GLP-1 receptor agonist in preclinical work. It is supplied as a lyophilized powder in a sealed vial for laboratory research use only.
Read reference →CompoundTirzepatide
Tirzepatide is a synthetic acylated peptide (CAS 2023788-19-2, formula C225H348N48O68, average mass 4813.45) described in the literature as a dual agonist at the GIP and GLP-1 receptors. It is supplied as a lyophilized powder in a sealed vial for laboratory research use only.
Read reference →AOD-9604
AOD-9604 is a synthetic analogue of the carboxy terminal fragment of growth hormone (CAS 221231-10-3, formula C78H123N23O23S2, average mass 1815.08). It is supplied as a lyophilized powder in a sealed vial for laboratory research use only.
Read reference →CompoundARA-290
ARA-290, also called cibinetide, is an 11-residue linear peptide (CAS 1208243-50-8, formula C55H89N17O21, average mass 1257.3) modelled on a surface helix of erythropoietin. It is supplied as a lyophilized powder in a sealed vial for laboratory research use only.
Read reference →CompoundBPC-157
BPC-157 is a synthetic 15-residue peptide (CAS 137525-51-0, formula C62H98N16O22, average mass 1419.53) derived from a sequence originally described in gastric juice protein. It is supplied as a lyophilized powder in a sealed vial for laboratory research use only.
Read reference →CompoundDihexa
Dihexa is a small synthetic peptidomimetic (CAS 1401708-83-5, formula C25H33N3O4, average mass 439.55) derived from the angiotensin IV series and identified in the reference as N-hexanoic-Tyr-Ile-(6)-aminohexanoic amide. It is supplied as a lyophilized powder in a sealed vial for laboratory research use only.
Read reference →CompoundDSIP
DSIP, the delta sleep-inducing peptide, is a nine-residue linear peptide (CAS 62568-57-4, formula C35H48N10O15, average mass 848.81) first isolated from rabbit brain perfusate. It is supplied as a lyophilized powder in a sealed vial for laboratory research use only.
Read reference →CompoundGHK-Cu
GHK-Cu is the copper(II) complex of the tripeptide glycyl-L-histidyl-L-lysine (CAS 49557-75-7, formula C14H24CuN6O4, average mass 403.92), supplied as a deep blue lyophilized powder. It is provided in a sealed vial for laboratory research use only.
Read reference →CompoundIGF-1 LR3
IGF-1 LR3 is a recombinant analogue of insulin-like growth factor 1 (CAS 946870-92-4, formula C990H1528N262O300S7, average mass 9117.9), engineered to reduce binding by IGF binding proteins. It is supplied as a lyophilized powder in a sealed vial for laboratory research use only.
Read reference →CompoundIpamorelin
Ipamorelin is a short synthetic growth hormone secretagogue (CAS 170851-70-4, formula C38H49N9O5, average mass 711.85) recorded with the sequence H-Aib-His-D-2-Nal-D-Phe-Lys-NH2. It is supplied as a lyophilized powder in a sealed vial for laboratory research use only.
Read reference →CompoundKisspeptin-10
Kisspeptin-10 is a 10-residue amidated peptide (CAS 374675-21-5, formula C63H83N17O14, average mass 1302.47) corresponding to the shortest fully active fragment of the KISS1 gene product. It is supplied as a lyophilized powder in a sealed vial for laboratory research use only.
Read reference →CompoundKPV
KPV is a tripeptide (CAS 67727-97-3, formula C16H30N4O4, average mass 342.44) with the sequence H-Lys-Pro-Val-OH, corresponding to the carboxy terminal three residues of alpha melanocyte stimulating hormone. It is supplied as a lyophilized powder in a sealed vial for laboratory research use only.
Read reference →CompoundL-Glutathione
L-Glutathione is the reduced thiol form of the endogenous cellular antioxidant commonly abbreviated GSH, supplied as a lyophilized white powder. It is provided in a sealed vial for laboratory research use only.
Read reference →CompoundMelanotan-1
Melanotan-1, also called afamelanotide, is a linear synthetic analogue of alpha melanocyte stimulating hormone (CAS 75921-69-6, formula C78H111N21O19, average mass 1646.85). It is supplied as a lyophilized powder in a sealed vial for laboratory research use only.
Read reference →CompoundMelanotan-2
Melanotan-2 is a synthetic cyclic analogue of alpha-melanocyte stimulating hormone that behaves as a broad melanocortin receptor agonist in laboratory assays. It is supplied as a sealed vial of lyophilized powder for in vitro and preclinical research only.
Read reference →CompoundMOTS-c
MOTS-c is a 16-residue mitochondrial-derived peptide whose reading frame lies inside the mitochondrial 12S ribosomal RNA gene. It is supplied lyophilized in a sealed vial for in vitro and preclinical research only.
Read reference →CompoundNAD+
NAD+ is nicotinamide adenine dinucleotide, a redox coenzyme rather than a peptide, central to electron transfer and to the enzymes that consume it as a substrate. It is supplied as a lyophilized powder in a sealed vial for in vitro and preclinical research only.
Read reference →CompoundP-21
P-21 is a small peptidomimetic derived from an active fragment of ciliary neurotrophic factor and studied in rodent neurogenesis models. It is supplied as a lyophilized powder in a sealed vial for in vitro and preclinical research only.
Read reference →CompoundPE 22-28
PE 22-28 is a short analogue of spadin, the sortilin propeptide fragment studied as a blocker of the TREK-1 potassium channel. It is supplied lyophilized in a sealed vial for in vitro and preclinical research only.
Read reference →CompoundPT-141
PT-141, also recorded as bremelanotide, is a cyclic melanocortin receptor agonist structurally close to Melanotan-2 but with a different subtype preference. It is supplied as a lyophilized powder in a sealed vial for in vitro and preclinical research only.
Read reference →CompoundSelank
Selank is a synthetic heptapeptide built from the immunopeptide tuftsin with a stabilising proline-glycine-proline extension. It ships as a lyophilized powder in a sealed vial for in vitro and preclinical research only.
Read reference →CompoundSemax
Semax is a synthetic heptapeptide based on the ACTH(4-7) fragment with a proline-glycine-proline extension added for stability. It is supplied lyophilized in a sealed vial for in vitro and preclinical research only.
Read reference →CompoundSermorelin
Sermorelin is the 1-29 fragment analogue of growth hormone releasing hormone, the shortest portion described as retaining full receptor activity. It is supplied lyophilized in a sealed vial for in vitro and preclinical research only.
Read reference →CompoundSS-31
SS-31 is a short aromatic-cationic peptide, also recorded as elamipretide, that concentrates on the inner mitochondrial membrane through an affinity for cardiolipin. It is supplied lyophilized in a sealed vial for in vitro and preclinical research only.
Read reference →CompoundTB-500
TB-500 is the synthetic N-acetylated heptapeptide copying the actin-binding site of thymosin beta-4. It is supplied lyophilized in a sealed vial for in vitro and preclinical research only.
Read reference →CompoundTesamorelin
Tesamorelin is a stabilised analogue of the full 1-44 growth hormone releasing factor sequence, studied as a long-lived GHRH receptor agonist. It is supplied as a lyophilized powder in a sealed vial for in vitro and preclinical research only.
Read reference →CompoundThymosin Alpha-1
Thymosin alpha-1 is an acetylated thymic peptide derived from processing of prothymosin alpha and studied as an immune signalling molecule. It is supplied lyophilized in a sealed vial for in vitro and preclinical research only.
Read reference →BPC-157 + TB-500 (Wolverine Blend)
This blend is one vial co-lyophilized with 10 mg of BPC-157 and 10 mg of TB-500, two peptides studied separately in repair models. It is supplied sealed, for in vitro and preclinical research only.
Read reference →CompoundCJC-1295 (No DAC) + GHRP-6
This vial pairs a short-acting modified releasing factor analogue with GHRP-6, two growth hormone secretagogues that act at different receptors. It is supplied co-lyophilized in a sealed vial for in vitro and preclinical research only.
Read reference →CompoundCJC-1295 (No DAC) + Ipamorelin
This blend pairs the short-acting modified releasing factor analogue with Ipamorelin, a selective ghrelin receptor secretagogue. It is supplied co-lyophilized in a sealed vial for in vitro and preclinical research only.
Read reference →CompoundGLOW Mix
GLOW Mix is a single-vial research blend in which GHK-Cu at 50 mg, BPC-157 at 10 mg and TB-500 at 10 mg are co-lyophilized from one solution into one cake. It is supplied as a lyophilized powder labeled at 70 mg total peptide content with a lot-matched certificate of analysis.
Read reference →CompoundKLOW Blend
KLOW Blend is a four-component research preparation in which KPV at 10 mg, GHK-Cu at 50 mg, BPC-157 at 10 mg and TB-500 at 10 mg are co-lyophilized from a single solution. It is supplied as a lyophilized powder labeled at 80 mg total peptide content with a lot-matched certificate of analysis.
Read reference →CompoundTesamorelin + Ipamorelin
This blend pairs tesamorelin at 10 mg with ipamorelin at 5 mg, co-lyophilized into a single vial labeled at 15 mg total peptide content. The two components engage different receptors within the same endocrine axis in the published literature, which is why they are studied together.
Read reference →Selank + Semax Nasal Spray
This is a mucosal spray format in which two synthetic heptapeptides, Selank at 5 mg and Semax at 5 mg, are dissolved together in a buffered aqueous vehicle and filled into a metered pump bottle. The label states total peptide content per bottle rather than a per-actuation figure.
Read reference →CompoundSelank Nasal Spray
This is a mucosal spray format carrying Selank, a synthetic heptapeptide analogue of tuftsin, dissolved in a buffered aqueous vehicle and filled into a metered pump bottle. The label states 10 mg total peptide content per bottle.
Read reference →CompoundSemax Nasal Spray
This is a mucosal spray format carrying Semax, a synthetic heptapeptide analogue of the ACTH(4-7) fragment, dissolved in a buffered aqueous vehicle and filled into a metered pump bottle. The label states 10 mg total peptide content per bottle.
Read reference →Brain-Fuel Dissolving Strips
This is a fast-dissolving film format carrying a nootropic-class peptide composition dispersed in a cast hydrophilic polymer matrix and die-cut into strips. It is supplied as a sealed pack of 30 strips, labeled by total peptide content per strip, with composition stated on the lot certificate of analysis.
Read reference →CompoundNAD+ Dissolving Strips
This is a fast-dissolving film format carrying NAD+, nicotinamide adenine dinucleotide, dispersed in a cast hydrophilic polymer matrix and die-cut into strips. It is supplied as a sealed pack of 30 strips labeled by content per strip.
Read reference →CompoundSelank + Semax Dissolving Strips
This is a fast-dissolving film format in which two synthetic heptapeptides, Selank and Semax, are dispersed in a cast hydrophilic polymer matrix and cut into strips. It is supplied as a sealed pack of 20 strips labeled by peptide content per strip.
Read reference →Epithalon
Epithalon is a synthetic tetrapeptide with the sequence H-Ala-Glu-Asp-Gly-OH, commonly abbreviated AEDG, and it is the most studied member of the Khavinson short-peptide bioregulator family. It is supplied as a sterile-filtered lyophilized powder with a lot-matched certificate of analysis.
Read reference →CompoundPinealon
Pinealon is a synthetic tripeptide with the sequence H-Glu-Asp-Arg-OH, abbreviated EDR, and it belongs to the Khavinson short-peptide bioregulator family associated in that literature with neural tissue. It is supplied as a sterile-filtered lyophilized powder with a lot-matched certificate of analysis.
Read reference →CompoundProstamax
Prostamax is a peptide bioregulator preparation associated in the Khavinson literature with prostate tissue, supplied as a lyophilized powder. It carries no single sequence, CAS number or molecular weight in our molecular dataset, so it is described as a preparation rather than one defined molecule.
Read reference →CompoundTestagen
Testagen is a synthetic tetrapeptide with the sequence H-Lys-Glu-Asp-Gly-OH, a member of the Khavinson short-peptide bioregulator family associated in that literature with reproductive tissue. It is supplied as a lyophilized powder with a lot-matched certificate of analysis.
Read reference →CompoundThymalin
Thymalin is a thymus-derived polypeptide complex, meaning a preparation of multiple low molecular weight peptide components rather than one defined synthetic sequence. It is supplied as a lyophilized powder with a lot-matched certificate of analysis describing the chromatographic profile.
Read reference →CompoundVesugen
Vesugen is a synthetic tripeptide with the sequence H-Lys-Glu-Asp-OH, abbreviated KED, and it belongs to the Khavinson short-peptide bioregulator family associated in that literature with vascular tissue. It is supplied as a lyophilized powder with a lot-matched certificate of analysis.
Read reference →CompoundVilon
Vilon is a synthetic dipeptide with the sequence H-Lys-Glu-OH, abbreviated KE, and it is the smallest member of the Khavinson bioregulator family, associated in that literature with thymic and immune tissue. It is supplied as a lyophilized powder with a lot-matched certificate of analysis.
Read reference →All content is provided for laboratory and research reference only and is not medical advice. Products are not for human or veterinary consumption.