Research Guides
Research peptide guides
Clear, science-led explanations written for researchers. Every guide is framed for in-vitro laboratory research use only.
Research peptides, explained: what they are and how US labs use them
What peptides are, how they differ from proteins, why the lab studies them, how a Certificate of Analysis verifies purity, and how research peptides reach US laboratories.
8 min readBPC-157: what the pentadecapeptide is and what studies examine
BPC-157, the fifteen-amino-acid pentadecapeptide: what it is, the pathways researchers study, where it shows up across multi-compound research sets, and how our US vials ship.
7 min readCJC-1295: the GHRH (1-29) analog and what the research covers
CJC-1295 (No DAC) is a synthetic GHRH (1-29) analog studied for growth-hormone-axis receptor signaling, and it often shows up paired with ipamorelin at the bench.
7 min readWhat is Tesamorelin, and what does the research examine?
A stability-enhanced GHRH (1-44) analog studied for hypothalamic-pituitary signaling and growth-hormone regulation, supplied to US laboratories pre-mixed with a batch Certificate of Analysis.
7 min readIpamorelin: what it is and what the literature examines
A selective pentapeptide growth-hormone secretagogue (GHSR-1a agonist), frequently run alongside GHRH analogs at the bench, supplied to US laboratories pre-mixed with a batch Certificate of Analysis.
7 min readTB-500: the thymosin beta-4 fragment and what the research covers
Ac-LKKTETQ residue by residue, where it sits in the 43-residue thymosin β4, which molecule the actin literature actually studied, and how to confirm what is in a vial.
10 min readWhat GHK-Cu peptide is, and what the research examines
The copper(II) complex of Gly-His-Lys: how the metal is bound and how tightly, why the solution is blue, what pulls the copper off, and what a US buyer should verify.
10 min readMOTS-c peptide: what it is and why its mitochondrial origin matters
MOTS-c is encoded by mitochondrial DNA, not nuclear DNA, a mitochondrial-derived peptide. Here is what that unusual origin means for metabolic and mitochondrial-signaling research, and how our US vials ship.
7 min readKPV peptide: the three-residue α-MSH fragment, explained
KPV is the three-residue tail of α-MSH (11-13). Here is what that lysine-proline-valine fragment is, why labs reach for it instead of the full hormone, what studies examine, and how our US vials ship.
7 min readPT-141: the MC4R-selective melanocortin agonist
PT-141 (bremelanotide) is a cyclic melanocortin agonist built from Melanotan II by a single C-terminal edit, studied as an MC3R/MC4R-selective probe for centrally expressed receptor signaling.
7 min readMelanotan II (MT-II): the melanocortin reference agonist
Melanotan II (MT-II) is a stabilized cyclic α-MSH analog used as the broad-spectrum, non-selective reference agonist in melanocortin-receptor research, and the baseline that selective analogs like PT-141 are measured against.
8 min readWhat is retatrutide (reta peptide)?
Retatrutide, often called "reta peptide", is an investigational triple GLP-1/GIP/glucagon receptor agonist. Here is a plain, US-framed overview of what it is, how it compares to tirzepatide, and what the research has and has not shown.
9 min readIs NAD+ a peptide, or a coenzyme?
Why NAD+ is a dinucleotide coenzyme rather than a peptide, what the plus sign means, how cells make and consume it, how it compares with NMN and NR, and what controls its stability.
10 min readWhat is the Glow Stack?
One research vial pairing BPC-157, TB-500 and GHK-Cu (70mg total), explained for US laboratories: composition, research rationale, certificate, and supply.
7 min readWhat is the Wolverine Stack?
A dual-peptide research set — BPC-157 (10mg) and TB-500 (10mg) in one pre-mixed vial — explained for US laboratories: composition, research rationale, certificate, and supply.
7 min readWhat is KLOW peptide?
The four peptides in an 80mg KLOW vial, why equal milligrams are not equal molecules, why the solution is blue, and what to check when buying KLOW in the United States.
9 min readThe Hulk Stack: a two-peptide GH-axis research set
How the Hulk Stack relates to the CJC-1295 + ipamorelin pairing, what the maleimide DAC group does, which receptors each peptide reaches, and what a US buyer should check.
10 min readCJC-1295 and Ipamorelin: why researchers pair them
How a GHRH analog (CJC-1295) and a selective growth-hormone secretagogue (Ipamorelin) end up paired so often in growth-hormone-axis research, what the pairing is meant to show, and its limits.
7 min readBPC-157 vs TB-500: how the two research peptides compare
How BPC-157 and TB-500 line up as research compounds: their origins, the mechanisms each is studied for, why they so often appear together, and how each is supplied to US laboratories.
7 min readPre-mixed peptides vs lyophilized powder, and why it matters
Almost every research peptide on the market ships as lyophilized powder that has to be reconstituted before use. Pre-mixed vials arrive already in solution. Here is what actually changes, in both directions.
8 min readStoring research peptides so they reach the assay intact
Lyophilized versus in-solution stability, why our pre-mixed US vials are refrigerated instead of frozen, and the bench handling that keeps research peptides intact.
7 min readHow to reconstitute peptides
Reconstituting a peptide means turning freeze-dried powder into a measurable solution. Here is the step-by-step procedure, the water to use, the mistakes to avoid, and when you can skip it.
7 min readBacteriostatic water (bac water) for peptides: solution stability
What US labeling says is in bacteriostatic water, what benzyl alcohol can and cannot do, the five ways a dissolved peptide changes, and where a pre-mixed vial fits.
9 min readInside the reusable pen: how each click meters a volume
A straightforward look at the reusable pen as a precise volumetric dispensing device: the click ratchet, the threaded rod, and the 0.01 mL-per-click mechanics.
6 min readWhat a Certificate of Analysis actually tells you
What a COA is, what HPLC and mass spectrometry each confirm, how to read one when you are sizing up a supplier, and why every US batch we ship carries its own certificate.
6 min read