Reference material on the peptide and small-molecule research compounds we supply - what they are, how to reconstitute and store them in the laboratory, and how to calculate concentrations. All compounds are supplied for in-vitro laboratory research only, not for human consumption.
Peptides are short chains of amino acids linked by peptide bonds. Where proteins typically contain hundreds or thousands of residues, peptides are usually between two and fifty. Many of the research compounds we supply are synthetic analogues of endogenous peptides or fragments thereof, produced to defined sequences for use in laboratory experiments.
In a research setting, synthetic peptides are used as reference standards, ligands for receptor binding studies, and probes for investigating cell-signalling pathways in cultured cells and other in-vitro models. The compounds we supply are research reagents only; they are not pharmaceutical products and are not intended for human or veterinary use.
Peptides are typically characterised in the research literature by the receptor or biochemical pathway they interact with. Examples of how several compound classes are described in peer-reviewed studies:
These descriptions summarise how the compounds are characterised in the published scientific literature. They are not claims about effects in humans.
Incretin-receptor agonists (GLP-1, GIP, glucagon, amylin) and small-molecule AMPK / NNMT compounds studied in metabolic-signalling research.
Tirzepatide, Semaglutide, Liraglutide, Cagrilintide, AOD9604, 5-Amino-1MQ, AICAR
GHRH analogues and ghrelin-receptor agonists characterised as growth-hormone secretagogues in preclinical literature.
HGH, Sermorelin, CJC 1295 (with / without DAC), GHRP-2, GHRP-6, Ipamorelin, Tesamorelin, IGF-1 LR3
Peptides studied in preclinical tissue, gastrointestinal, and immune-cell research models.
BPC-157, TB-500, KLOW Blend, Thymosin Alpha-1, ARA290
Endogenous and synthetic compounds studied in cellular-energetics, redox, and mitochondrial research.
GHK-Cu, NAD+, Epithalon, MOTS-c, Glutathione
Synthetic and endogenous neuropeptides studied at central-nervous-system and circadian signalling targets.
Semax, Selank, Adamax, Kisspeptin-10, Oxytocin, DSIP, Melatonin
α-MSH analogues characterised as melanocortin-receptor agonists in receptor-binding studies.
MT-1, Melanotan 2 (MT-2), PT-141 (Bremelanotide)
Most peptides are supplied as a lyophilised (freeze-dried) powder in a sealed vial. Before use as a laboratory reagent, they are typically reconstituted in a suitable aqueous diluent - bacteriostatic water is the most common reference diluent cited in the research literature.
Wipe the septum of the peptide vial and the diluent vial with an alcohol swab before penetrating.
Using a clean syringe, draw the volume of diluent required to reach your target concentration.
Insert the needle into the peptide vial and release the diluent slowly down the side wall. Do not spray directly onto the lyophilised powder as this can cause foaming and loss of material.
Swirl the vial gently until the powder is fully in solution. Do not vortex or shake - mechanical agitation can denature the peptide.
Store the reconstituted solution at 2–8 °C. Shelf life after reconstitution varies by compound; consult the relevant literature for the peptide in question.
Once a lyophilised compound has been dissolved in a known volume of diluent, the resulting concentration is calculated as:
Worked example: 10 mg of lyophilised peptide dissolved in 2 ml of bacteriostatic water gives a concentration of 5 mg/ml, or 5000 µg/ml.
These calculations are provided for laboratory reference only. They are not, and are not intended to be, dosing guidance for human or veterinary use.
| State | Temperature | Typical shelf life |
|---|---|---|
| Lyophilised (unreconstituted) | 2–8 °C (refrigerated) or −20 °C (frozen) | Up to 24 months, compound-dependent |
| Reconstituted (in solution) | 2–8 °C (refrigerated) | Typically 4–6 weeks, compound-dependent |
| Short-term transport | Below 25 °C | Up to 90 days for most lyophilised peptides |
We supply most compounds in two formats: traditional lyophilised vials, and pre-reconstituted multi-dose pen cartridges. The choice depends on the research workflow.
Purity matters in research. The peptides we supply are independently verified by Janoshik Analytical using high-performance liquid chromatography (HPLC) and mass spectrometry. Lab reports include the batch identifier, purity percentage, and the Janoshik verification key so results can be authenticated against Janoshik's records.
Third-party testing is the most reliable way to confirm that a research reagent matches its stated specification. We publish the verification records on our Purity page and supply the printed Janoshik report with the order where one has been issued for the current batch.
Browse by compound or by research area, or review our purity documentation.