Research peptide blog
Notes for laboratory researchers: what individual peptides are and how they differ, how lyophilized material is reconstituted and stored, and how purity is measured and verified.
- Comparisons
BPC-157 vs TB-500: How the Two Peptides Differ
BPC 157 vs TB 500 compared side by side: sequences, origins, molecular weights, proposed mechanisms, research models, regulatory status and lab handling.
· 9 min read
- Quality and testing
How to Read a Peptide Certificate of Analysis
How to read a peptide certificate of analysis: HPLC purity, mass spec identity, net peptide content, TFA vs acetate, water, endotoxin and lot numbers.
· 10 min read
- Quality and testing
Janoshik Peptide Testing: What a Report Shows
What a Janoshik peptide test report shows, which fields come from the lab and which from the client, and how to verify a report with its task number and key.
· 9 min read
- Compound profiles
GHK-Cu Copper Peptide: Structure and Research
Copper peptides explained through GHK-Cu: the Gly-His-Lys sequence, how it binds copper(II), its discovery in human plasma, identifiers and lab handling.
· 10 min read
- Compound profiles
MOTS-c Peptide: The Mitochondrial-Derived Peptide
The MOTS-c peptide explained: its 16-residue sequence, formula and CAS number, its origin in the mitochondrial 12S rRNA gene, the AMPK link and its status.
· 9 min read
- Comparisons
Tirzepatide vs Retatrutide: Receptor Targets Compared
Tirzepatide vs retatrutide: how the dual and triple agonist peptides differ in receptor targets, sequence, lipidation, half-life and approval status.
· 8 min read
- Compound profiles
What Is Retatrutide? The Triple Agonist Explained
Retatrutide is a 39-residue lipidated peptide that activates the GLP-1, GIP and glucagon receptors. Learn its structure, receptor data and lab handling.
· 10 min read
- Handling and storage
Lyophilized Peptides: How Freeze-Drying Works
How lyophilization works: freezing, primary drying by sublimation and secondary drying, why peptides are supplied dry, and what the cake in a vial tells you.
· 9 min read
- Quality and testing
Peptide Purity: How HPLC Measures It
What peptide purity means, how reversed-phase HPLC measures it at 210 to 220 nm, which impurities it catches or misses, and how it differs from content.
· 9 min read
- Compound profiles
What Is BPC-157? Sequence, Structure and Research
What is BPC-157? A 15-residue synthetic peptide from gastric juice studies: its sequence, formula, CAS number, proposed mechanisms and regulatory status.
· 10 min read
- Compound profiles
What Is TB-500? Thymosin Beta-4 Fragment Explained
What is TB-500? The acetylated seven-residue fragment Ac-LKKTETQ from thymosin beta-4's actin-binding region: identity, origin, research and status.
· 9 min read
- Handling and storage
How to Reconstitute Lyophilized Peptides in the Lab
How to reconstitute peptides for in-vitro work: choosing a solvent by charge and hydrophobicity, working out mg/mL, mixing gently, filtering and aliquoting.
· 11 min read
- Handling and storage
How to Store Peptides: Temperatures, Light and Moisture
How to store peptides in the lab: freezer temperatures for lyophilized powder, fridge limits for solutions, and how light, moisture and air degrade them.
· 9 min read
- Quality and testing
Research Peptides: What 'Research Use Only' Means
What research peptides are, what "research use only" means under US law, how a reagent differs from a finished drug, and what a responsible supplier states.
· 9 min read
- Peptide science
What Are Peptides? Structure, Bonds and Classes
What are peptides? How amino acids link into chains, where the peptide and protein line falls, the main classes, and how research peptides are made and stored.
· 11 min read