Frequently Asked Questions

Answers to the questions researchers ask most often

🛡 Are your products independently tested?

Yes. Every batch undergoes independent HPLC verification by Janoshik Analytical, a Czech laboratory specialising in peptide analysis and operating independently from us. Reported purity levels are consistently above 99%.

When a Janoshik report is available for the current batch, a printed Certificate of Analysis (COA) is included with the order. If a report is not included, the verification details are made available through our Purity page.

Each COA includes a unique verification code that can be checked directly through Janoshik’s official portal. This allows researchers to independently confirm the results rather than relying solely on supplier claims.

We also provide guidance on understanding Janoshik HPLC reports, including how to interpret the information contained within them.

---

💧 Reconstituting BAC water and powder: 4 simple steps

1. Clean the vial surface
   Use one of the alcohol wipes supplied in the package to disinfect the vial tops. Allow the surface to dry completely.
2. Draw BAC water
   Using an insulin syringe, withdraw 2 mL of bacteriostatic water from the BAC water vial.
3. Add liquid slowly
   Insert the needle into the peptide vial and allow the BAC water to run gently down the inside wall of the vial. Avoid directing the stream directly onto the powder.
4. Mix carefully
   Gently swirl the vial until the powder has fully dissolved. Do not shake. Allow approximately 30 seconds for complete dissolution, then refrigerate.

The reconstitution card inside the box lid can be used as a quick reference for future preparations.

---

💉 Pen instructions: needle attachment, priming and dose dial

Attach a new needle
Remove an alcohol wipe and clean the pen tip. Secure a fresh foil-wrapped needle onto the threaded end of the pen.

Prime before use
Turn the dial by one click, hold the pen with the needle pointing upward, and press the dose button. A small drop appearing at the needle tip confirms successful priming and removal of air.

Select the research amount
Turn the dose dial to the required setting. Each click represents a fixed increment based on the pen calibration. The display window indicates the total selected amount.

Use the administration route described in research literature
Published research protocols commonly describe subcutaneous administration methods, including areas such as the abdomen, thigh, or upper arm. Researchers typically rotate locations between administrations.

Dispose and store correctly
Place used needles into an approved sharps container. Replace the pen cap and return the device to refrigerated storage.

Each pen provides the number of uses specified for the selected format. Once empty, the cartridge can be replaced using the same pen body.

For research purposes only. Information is provided from published research protocols and does not constitute medical advice or guidance for human use.

---

📍 Research administration information

Published literature describes subcutaneous administration methods in studies involving melatonin, including pharmacokinetic and clinical research settings. Researchers commonly alternate administration locations to minimise repeated stress to the same area.

This information is provided only as background from peer-reviewed research literature and should not be interpreted as medical instructions, dosing advice, or recommendations for human use.

Reference: Cardinali et al. 2008

---

🎯 What dose should be used?

The appropriate approach is to follow the relevant research protocol. Published studies generally use gradual titration, beginning with lower levels and increasing at predetermined intervals.

The highlighted phase in the protocol materials represents the range where many published research cohorts continue their investigations.

Researchers who are new to this compound typically review the earliest research phase before progressing through later phases according to the study design. Gradual progression is commonly used in research protocols.

Those already familiar with the compound can review the available phase information to determine the appropriate research format and duration.

For customised research schedules, contact our team before ordering. We assist researchers with selecting suitable formats based on their planned study timelines.

Research use only. Information is derived from published peer-reviewed research literature and is not medical or human-use guidance. Individuals considering human applications should consult a qualified healthcare professional.

Reference: Cardinali et al. 2008

---

Key Information

Category	Details
Compound	Melatonin
Research classification	Neuropeptide research
Available size	10 mg
Pricing	From £37
Format	Lyophilised powder supplied in sealed vial
Purity	>99% HPLC verified by Janoshik Analytical
Intended purpose	Laboratory research only; not for human consumption

---

Chemical and Reference Information

The following information is compiled from public scientific databases, including PubChem and UniProt, along with peer-reviewed literature. It is intended solely for laboratory research and characterisation purposes.

Property	Information
Compound type	Endogenous indoleamine neurohormone
Molecular formula	C13H16N2O2
Molecular weight	232.28 g/mol
CAS number	73-31-4
PubChem ID	896
Receptor activity	MT1 and MT2 melatonin receptor agonist
Reported half-life	Approximately 20–50 minutes in human serum
Solubility	Reconstituted using suitable laboratory solvents such as bacteriostatic water or ethanol
Storage (lyophilised)	Stable at 2–8°C; protect from light and store in an amber vial
Storage (reconstituted)	Store at 2–8°C and protect from light
Research status	Widely studied endogenous compound

---

Research Profile

• Indoleamine compound
• Melatonin receptor (MT1/MT2) agonist
• Investigated in circadian rhythm research
• Independently purity tested
• Intended for research use only

Melatonin (N-acetyl-5-methoxytryptamine) is an indoleamine compound studied in scientific literature for its involvement in circadian signalling through MT1 and MT2 receptors. It is supplied as a freeze-dried powder intended exclusively for laboratory research.

Descriptions of biological activity are based on published scientific characterisation and do not represent claims regarding human effects.

---

Laboratory Handling

Melatonin is provided as a freeze-dried powder in a sealed glass vial. For laboratory preparation, add the selected diluent volume slowly along the inside wall of the vial. Mix by gentle swirling until dissolved; avoid vigorous agitation.

Prepared solutions should be stored under refrigerated conditions and protected from light.

A reconstitution calculator can be used to determine the resulting concentration in mg/mL.

Form	Storage	Typical stability
Lyophilised	2–8°C or -20°C	Up to 24 months
Reconstituted	2–8°C	Typically 4–6 weeks

---

Purity and Verification

Every supplied Melatonin batch is independently analysed using HPLC testing performed by Janoshik Analytical.

Where available, the current batch report is provided with the order and includes a verification code that can be checked against Janoshik records. Reported purity consistently exceeds 99%.

---

Related Research Compounds

Researchers studying Melatonin frequently examine related compounds within preclinical literature, including:

DSIP – Neuropeptide Research