Protocol
How to reconstitute a lyophilized peptide
Bacteriostatic water volumes, swirl-don't-shake, and how to read the concentration off the label.
Read the guide →Home › Learn
Research guides and tools
Answer-first guides written for the bench, not the sales page. Each one starts with the number or the step you came for.
Start here: three handling guides
Quality
How to read a certificate of analysis
What HPLC purity, LC-MS identity and endotoxin numbers mean, and the three lines most COAs leave out.
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Handling
Storage and stability by compound
Freezer, fridge or bench: a table of storage windows before and after reconstitution.
Read the guide →Compound research guides
What is each compound studied for?
One long-form guide per compound: structure, mechanism, the models it appears in, what the literature shows, handling, and references.
GLP-1 & Metabolic
Retatrutide research guide
Retatrutide is a synthetic 39-amino-acid peptide engineered to activate three receptors at once: GIP, GLP-1 and the glucagon receptor.
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GLP-1 & Metabolic
Tirzepatide research guide
Tirzepatide is a 39-amino-acid synthetic peptide with agonist activity at both the GIP and GLP-1 receptors.
Read the guide →
GLP-1 & Metabolic
Semaglutide research guide
Semaglutide is a 31-residue analogue of human GLP-1 modified for a long circulating half-life.
Read the guide →
Repair & Recovery
BPC-157 research guide
BPC-157 is a synthetic pentadecapeptide, 15 amino acids long, whose sequence derives from a protective protein found in human gastric juice.
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Repair & Recovery
TB-500 research guide
TB-500 is a synthetic peptide fragment of thymosin beta-4, a 43-amino-acid protein present in nearly every cell type that binds and sequesters actin, the structural protein cells use to move and divide.
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Peptide Blends
BPC-157 and TB-500 blend research guide
The blend co-lyophilizes BPC-157 and TB-500 in one vial at a fixed 1:1 ratio, 5 mg of each.
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Peptide Blends
CJC-1295 and Ipamorelin blend research guide
This blend combines CJC-1295 without DAC, a 29-amino-acid analogue of growth-hormone-releasing hormone, with Ipamorelin, a pentapeptide agonist of the ghrelin receptor, co-lyophilized at 5 mg each.
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Growth Hormone Axis
Ipamorelin research guide
Ipamorelin is a synthetic pentapeptide and a selective agonist of the ghrelin receptor, also called the growth-hormone secretagogue receptor (GHS-R1a).
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Growth Hormone Axis
Tesamorelin research guide
Tesamorelin is a 44-amino-acid analogue of growth-hormone-releasing hormone with a trans-3-hexenoic acid group at the N-terminus that protects it from enzymatic breakdown.
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Longevity & Skin
GHK-Cu research guide
GHK-Cu is the tripeptide glycyl-L-histidyl-L-lysine complexed with a copper(II) ion.
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Longevity & Skin
NAD+ research guide
NAD+ is nicotinamide adenine dinucleotide, the coenzyme at the centre of cellular energy metabolism and the substrate consumed by sirtuins, PARP enzymes and CD38.
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Longevity & Skin
MOTS-c research guide
MOTS-c is a 16-amino-acid peptide encoded by a short open reading frame within the mitochondrial 12S ribosomal RNA gene, one of a small family of mitochondrial-derived peptides.
Read the guide →Comparisons
Which compound fits the question?
Latest from the blog
Notes from the bench
Buying, handling and research-design questions as they come up. All posts →
Research design · 16 September 2026
Why clinical trial data does not transfer to your plate
A weekly dosing schedule from a phase 2 trial tells you nothing about a concentration in a well. This post explains what half-life means without a circulatory system, why serum albumin changes free concentration, and how to read trial papers without importing the wrong numbers.
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Buying · 16 September 2026
What does "research use only" actually mean?
Every vial on this site carries the phrase, and it is a statement about regulatory status rather than a disclaimer. This post covers what RUO designates, what it does not certify, why the label appears on the vial as well as the page, and what it asks of a buyer.
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Reference · 16 September 2026
What is actually in the other 1%?
A 99% pure peptide has 1% of something else, and it is not random. This post covers deletion sequences, truncations, oxidised and deamidated forms, where each comes from in synthesis, and why the shape of the impurity profile matters more than the number.
Read the post →How long do peptides last in storage?
Sealed lyophilized vials keep for years at -20°C. Once water is added, the clock starts. The windows below are conservative defaults; the certificate for your lot is the authority.
| State | Temperature | Window |
|---|---|---|
| Lyophilized, sealed | -20°C, dark | 24 months |
| Lyophilized, sealed | 2-8°C | 6 months |
| Reconstituted with bacteriostatic water | 2-8°C | 28 days |
| Reconstituted, GLP-1 class | 2-8°C | 28 days, protect from light |
| Any state | Room temperature | Hours, not days |
