Lab Guides and Compound Research Notes
Practical notes for working with research peptides at the bench, from mixing a vial to reading a lab result. The compound guides summarize what published studies have and haven’t shown, then list what we carry and which third-party Finnrick results for Welon Peptide Solutions products appear on our COAs page.
Reconstituting Peptides Step by Step
Settle the concentration before you open anything, choose a diluent that fits the length of the work, then mix without shaking. Ends with the five errors behind most spoiled vials.
Bacteriostatic vs Sterile Water
What 0.9% benzyl alcohol can and can’t do, why a vial you draw from repeatedly needs it, the 28–30 day window, and when an assay calls for plain sterile water instead.
Peptide Math for the Bench
Worked arithmetic for mg/mL, the amount in each draw, 1:10 dilution series and converting µg/mL into micromolar for cell-culture work, with a quick lookup table.
Storing Peptides: Dry and in Solution
Heat, moisture and light for sealed powder, what changes once a vial is mixed, what to check when a delivery arrives, and a one-table summary of storage life.
How Long Mixed Peptides Last
Four ways peptides break down in liquid, refrigerated planning windows by compound class, the habits that shorten them, and signs that a vial should be retired early.
Reading Lab Results and COAs
The parts of a certificate of analysis and its warning signs, then a row-by-row reading of the Finnrick results on our COAs page, including what those rows leave out.
What a Purity Percentage Means
How HPLC turns peak areas into a single figure, why identity needs mass spectrometry, what the impurity fraction holds and when half a percent makes a difference.
BPC-157: What the Studies Cover
Gut, tendon and blood-vessel research on the gastric-derived fifteen-residue peptide, with a plain account of how little human evidence exists.
TB-500 and Thymosin Beta-4 Research
The actin-sequestering mechanism first, then the skin, cornea, heart and scarring models built on it, and the point where the evidence stops being preclinical.
BPC-157 and TB-500 Compared
Origin, size, mechanism, typical models and stability in one table, plus how a study design decides between the two repair peptides or uses both.
GHK-Cu Copper Peptide Research
The blue copper tripeptide first isolated from human plasma: collagen and wound work, Connectivity Map gene screens, cosmetic studies and how to handle it.
Sermorelin, CJC-1295 and Ipamorelin
Two GHRH analogs against a ghrelin mimetic: receptors, half-lives, why pulsatile release shapes study design, and the reasoning behind pairing the families.
Semaglutide in the Research Literature
The single-receptor GLP-1 reference compound: its three structural changes, receptor biology, the SUSTAIN, STEP and SELECT programs, and open lab questions.
Tirzepatide and Retatrutide Compared
Dual GIP/GLP-1 against triple GIP/GLP-1/glucagon agonism: receptor balance, how mature each evidence base is, the glucagon question and which suits a study.
Retatrutide: Evidence and Open Questions
How the triple agonist was designed, its phase 1 and phase 2 results, the liver-fat sub-study, and what the TRIUMPH phase 3 program still has to settle.
Everything in these guides is educational material for laboratory work, and none of it is medical advice. For research use only. Not for human or veterinary use. Questions about a listing can go through our contact page.
