Endogenous indoleamine
An endogenous indoleamine derived from serotonin via N-acetylation and O-methylation. Reference standard for circadian and antioxidant research.
| Compound | Melatonin |
| Research category | Neuropeptide Research |
| Available sizes | 10mg |
| Pricing | From £15 |
| Format | Lyophilised powder in sealed vial |
| Purity | >99% by HPLC (Janoshik Analytical, batch-verified) |
| Intended use | In-vitro laboratory research only. Not for human consumption. |
Reference data drawn from public databases (PubChem, UniProt) and peer-reviewed literature. For research and laboratory characterisation only.
| Compound class | Endogenous indoleamine neurohormone |
| Molecular formula | C13H16N2O2 |
| Molecular weight | 232.28 g/mol |
| CAS Registry Number | 73-31-4 |
| PubChem CID | 896 |
| Receptor / mechanism | MT1 / MT2 melatonin receptor agonist. |
| Reported half-life | Reported ~20–50 minutes in human serum. |
| Solubility | Lyophilised powder reconstitutes in bacteriostatic water or ethanol for laboratory use. |
| Storage (lyophilised) | Stable at 2–8 °C lyophilised. Light-sensitive - store in amber vial. |
| Storage (reconstituted) | Reconstituted: store at 2–8 °C, use within 14 days. Protect from light. |
| Clinical / regulatory status | Endogenous metabolite; widely used in research. |
Melatonin (N-acetyl-5-methoxytryptamine) is an indoleamine characterised in the literature for its role in circadian signalling via the melatonin receptors MT1R and MT2R (not to be confused with the unrelated melanocortin analogue series). Supplied as lyophilised powder for in-vitro research use only.
The above describes how this compound is characterised in the published peer-reviewed literature. It is not a claim about effects in humans.
Melatonin is supplied as a lyophilised (freeze-dried) powder in a sealed glass vial. For laboratory reconstitution, add the desired volume of diluent (typically bacteriostatic water) slowly down the side wall of the vial. Swirl gently until fully dissolved - do not vortex or shake. Store reconstituted solutions at 2–8 °C and use within 4–6 weeks.
Use our Reconstitution Volume Calculator to compute the resulting mg/ml concentration.
| State | Temperature | Shelf life |
|---|---|---|
| Lyophilised | 2–8 °C or −20 °C | Up to 24 months |
| Reconstituted | 2–8 °C | 4–6 weeks typical |
Every batch of Melatonin we supply is independently HPLC-verified by Janoshik Analytical. Where a Janoshik report has been issued for the current batch it is supplied with the order and carries a unique verification key that can be authenticated against Janoshik's records. Reported purity is consistently above 99%.
Researchers working with Melatonin often work alongside the following compounds in the preclinical literature: