MOTS-c 10mg: Reconstitution and Storage for Research Use

MOTS-c has become one of the most studied mitochondrial-derived peptides in metabolic and longevity research. It is a 16-amino-acid peptide encoded within the 12S rRNA region of mitochondrial DNA, and it has been linked to insulin sensitivity, exercise capacity, and cellular stress response in preclinical models. As interest has grown, suppliers have begun offering MOTS-c in a range of vial sizes, and the 10mg format is now one of the most common.

For researchers, the vial size matters for two reasons. First, it determines how much solvent you add and what concentration you end up with. Second, it affects how long the material lasts once it is in solution. Get the maths wrong and you can waste an entire batch. Get the storage wrong and the peptide can degrade before you finish your experiment.

This article is written for laboratory researchers, independent scientists, and informed buyers who need practical guidance on handling a MOTS-c 10mg vial. It covers the biology of MOTS-c, the reconstitution calculation step by step, storage conditions, legal considerations, certificate of analysis checks, and a sourcing checklist. It does not make health claims, and it does not recommend MOTS-c for human consumption. All information here is for research and educational purposes only.

What Is MOTS-c and Why 10mg Matters

MOTS-c is a mitochondrial-derived peptide, which means it is encoded by mitochondrial DNA rather than nuclear DNA. It was first described in 2015, and a 2018 follow-up study showed it can translocate to the nucleus under metabolic stress and regulate gene expression. Since then, research has explored its role in glucose metabolism, lipid oxidation, and the cellular response to exercise. A Cell Metabolism paper on MOTS-c and metabolic homeostasis is one of the foundational studies in this area. It describes how the peptide influences the folate cycle and purine biosynthesis, two pathways that are central to cellular energy balance.

Because MOTS-c is still a research compound, it is sold in lyophilised powder form. Vial sizes vary, but 5mg and 10mg are the most common. The 10mg format is often chosen by labs that need to run multiple assays or that want to reduce the number of separate orders. However, a larger vial also means a longer reconstitution and storage timeline, so the handling rules become more important.

If you are comparing suppliers, the MOTS-c product page at Alta Peptides lists the MOTS-c vial format and documentation alongside other research compounds. As with any supplier, you should verify the current certificate of analysis for the specific batch you receive.

Reconstitution Maths for a MOTS-c 10mg Vial

Reconstitution is the process of dissolving a lyophilised peptide in a liquid solvent. The goal is to reach a known concentration, usually expressed in milligrams per millilitre (mg/mL) or micrograms per microlitre (mcg/µL). The calculation is straightforward once you know the vial size and the volume of solvent you add.

For a 10mg vial, the formula is:

Here are three common scenarios for a MOTS-c 10mg vial:

• Add 1mL of solvent: 10mg ÷ 1mL = 10mg/mL. This is a concentrated stock, useful for small-volume assays but harder to measure accurately.
• Add 2mL of solvent: 10mg ÷ 2mL = 5mg/mL. A common working concentration for many research protocols.
• Add 5mL of solvent: 10mg ÷ 5mL = 2mg/mL. A more dilute solution that is easier to pipette but takes up more freezer space.

If your protocol calls for a concentration in micrograms per microlitre, remember that 1mg/mL is equivalent to 1µg/µL. So a 5mg/mL solution is the same as 5µg/µL. This conversion trips up many first-time researchers, so write the units on the vial label.

For a broader walkthrough of the reconstitution process, the Alta Peptides guide to reconstituting research peptides covers solvent choice, technique, and common mistakes. The Alta Peptides peptide calculator can also be used to double-check your maths before you commit a full vial.

Step-by-Step Reconstitution of MOTS-c 10mg

The technique matters as much as the maths. A poor reconstitution can leave peptide clumped at the bottom of the vial, introduce contaminants, or cause foaming that denatures the peptide. Here is a practical sequence for a 10mg vial.

1. Prepare a clean workspace. Use a laminar flow hood if available. Wipe surfaces with 70% isopropyl alcohol and allow to dry. Wear gloves and eye protection.
2. Gather supplies. You will need the MOTS-c 10mg vial, a vial of bacteriostatic water or your chosen solvent, a sterile syringe and needle, and alcohol prep pads.
3. Swab both vial stoppers. Wipe the rubber stopper of the peptide vial and the solvent vial with separate alcohol pads. Let them dry fully. Do not blow on them.
4. Draw the solvent. Insert the needle into the solvent vial and draw the volume you calculated. For a 5mg/mL solution, draw 2mL.
5. Add the solvent slowly. Insert the needle into the peptide vial at a slight angle and aim the stream at the inside wall, not directly at the powder. This reduces foaming and shear stress on the peptide.
6. Swirl gently. Do not shake. Roll the vial between your palms or swirl it in a slow circle. The powder should dissolve within a minute or two. If it does not, let the vial sit at room temperature for a few more minutes and swirl again.
7. Inspect the solution. It should be clear and colourless. If you see particles or cloudiness, do not use it. Contact the supplier and request a replacement or a new COA.
8. Label the vial. Write the peptide name, concentration, solvent, and date of reconstitution on the label. This is essential for reproducibility.
9. Store immediately. Place the reconstituted vial in the refrigerator at 2 to 8°C, protected from light.

Avoid using tap water, sterile water for irrigation, or any solvent that has not been specified for peptide research. Bacteriostatic water contains 0.9% benzyl alcohol, which inhibits microbial growth and extends the shelf life of the reconstituted solution. However, benzyl alcohol is not compatible with every assay, so check your protocol first.

Storage Rules for Lyophilised MOTS-c

Before reconstitution, MOTS-c 10mg should be stored as a lyophilised powder. This form is much more stable than a solution, but it is not indestructible. The key rules are:

• Temperature: Store at -20°C for long-term stability. Some suppliers recommend -80°C for extended storage, but -20°C is sufficient for most research timelines.
• Light: Protect from light. Ultraviolet and visible light can degrade aromatic amino acids in the peptide sequence.
• Moisture: Keep the vial sealed and dry. Moisture can cause hydrolysis and aggregation.
• Freeze-thaw cycles: Avoid repeated warming and cooling. If you need to use the vial multiple times, consider aliquoting the powder before reconstitution, though this is tricky with a single 10mg vial.

Bachem’s peptide handling and storage guidelines provide a useful reference for these conditions. They note that lyophilised peptides are generally stable for months to years at -20°C when kept dry and protected from light. However, stability can vary between peptides, so always check the supplier’s documentation.

Storage Rules for Reconstituted MOTS-c

Once you have added solvent, the clock starts ticking. Reconstituted MOTS-c should be stored refrigerated at 2 to 8°C. The exact shelf life depends on the solvent, the concentration, and the peptide itself, but a common guideline is one to four weeks. Some protocols recommend using the solution within seven days for maximum reliability.

If you need to store reconstituted MOTS-c for longer, aliquot it into small volumes and freeze at -20°C or below. Avoid repeated freeze-thaw cycles of the same aliquot. Once thawed, use it within the day and do not refreeze.

For a more detailed look at temperature ranges and container choices, the Alta Peptides journal article on storing peptides covers fridge, freezer, and room-temperature rules in practical terms. The GenScript peptide storage and handling guidance also provides a useful comparison of storage conditions for different peptide formats.

How to Read a MOTS-c 10mg Certificate of Analysis

A certificate of analysis, or COA, is the single most important document when buying any research peptide. It should be batch-specific, meaning the lot number on the COA matches the lot number on the vial. Here is what to look for.

• Batch number: Must match the vial label exactly. If it does not, the COA is not valid for that vial.
• Test date: Should be recent and relevant to the batch you are buying.
• HPLC purity: Usually expressed as a percentage. For MOTS-c, 98% or higher is a common research-grade specification. A chromatogram should be attached.
• Mass spectrometry: Confirms the molecular weight and identity of the peptide. Without it, you cannot be sure the vial contains MOTS-c and not a different peptide.
• Appearance: Should describe a white lyophilised powder.
• Storage recommendations: Should match the guidance in this article or the supplier’s own documentation.
• Testing laboratory: Should be an independent, accredited lab. The name should be visible on the COA.

Accreditation adds confidence. Laboratories accredited by UKAS are assessed against international testing standards, which means they operate under a recognised quality system. For more on interpreting these documents, the Alta Peptides guide to reading a certificate of analysis walks through each section. You can also review current batch documentation on the Alta Peptides certificates page.

If a supplier cannot provide a batch-specific COA from an accredited lab, treat the product as unverified. Do not rely on a generic COA that covers a different batch, and do not accept a purity claim that is not backed by a chromatogram and mass spectrum.

Legal Status of MOTS-c in the UK

MOTS-c is not a controlled substance in the UK under the Misuse of Drugs Act. It is also not a licensed medicine. Selling it as a medicine, or making medical claims about it, would be unlawful. Research chemical suppliers typically sell it with a “not for human consumption” label. Buyers should understand that possessing a research peptide is generally legal for research purposes, but importing it or selling it for human use can cross legal lines.

In the UK, the Medicines and Healthcare products Regulatory Agency (MHRA) regulates medicines. Research peptides that are not licensed medicines fall outside that framework when sold strictly for research. However, if a supplier markets MOTS-c as a treatment for metabolic disease or ageing, they may be acting unlawfully. Researchers should purchase only from suppliers who clearly label products for research use only.

It is also worth noting that MOTS-c itself is prohibited at all times by the World Anti-Doping Agency (WADA). It is listed by name under section S4.4.1 (activators of AMP-activated protein kinase) of the Prohibited List, and the US Anti-Doping Agency notes it is not FDA-approved for use in humans or in compounded medications. The WADA Prohibited List is a useful reference for researchers working with athletes or in sports science, as it clarifies which compounds are banned in competitive sport.

This article is not legal advice. Always check your local laws and institutional guidelines before ordering or handling any research peptide.

Comparison Table: Vial Sizes and Reconstitution Scenarios

Common Mistakes with MOTS-c 10mg Vials

Researchers new to peptide handling often make the same mistakes. Here are the ones to avoid.

1. Shaking the vial. Vigorous shaking creates foam and can denature the peptide. Swirl gently instead.
2. Using the wrong solvent. Tap water and sterile water for irrigation are not suitable. Use bacteriostatic water or the solvent specified in your protocol.
3. Miscalculating the concentration. Double-check your maths and write the units on the label. A 10-fold error is easy to make and hard to detect.
4. Storing reconstituted peptide at room temperature. This accelerates degradation. Refrigerate immediately.
5. Refreezing thawed aliquots. Repeated freeze-thaw cycles damage the peptide. Aliquot before freezing and use each aliquot once.
6. Ignoring the COA. Without a batch-specific COA, you do not know what you are working with. Always verify documentation before use.

Sourcing Checklist for MOTS-c 10mg

When you search for MOTS-c 10mg, you will encounter many suppliers. Use this checklist to separate reliable research suppliers from resellers and scam sites.

• Batch-specific COA: Can they provide it before you buy?
• Accredited testing: Is the lab UKAS-accredited or equivalent?
• Clear research-use labelling: Do they avoid medical claims?
• Storage and shipping: Do they ship with cold packs if needed?
• Contact details: Is there a real address and responsive support?
• Payment security: Do they use secure checkout?
• Reputation: Are there independent reports of quality?

For researchers who need a reliable starting point, Alta Peptides supplies research peptides with batch documentation and storage guidance for the products they carry. As with any supplier, verify the current COA for the specific batch you receive.

Video: MOTS-c Research Overview

Frequently Asked Questions

How much bacteriostatic water should I add to a MOTS-c 10mg vial?

It depends on the concentration you need. Adding 1mL gives 10mg/mL, adding 2mL gives 5mg/mL, and adding 5mL gives 2mg/mL. Always check your protocol for the target concentration.

Can I store reconstituted MOTS-c at room temperature?

No. Reconstituted MOTS-c should be stored refrigerated at 2 to 8°C and protected from light. Room temperature accelerates degradation. If you need longer storage, aliquot and freeze at -20°C.

How do I know if my MOTS-c 10mg vial is genuine?

Check the batch-specific certificate of analysis. It should show HPLC purity, mass spectrometry identity, and match the lot number on your vial. If the supplier cannot provide it, do not buy.

Is MOTS-c a peptide?

Yes. MOTS-c is a 16-amino-acid peptide encoded within mitochondrial DNA. It is not a hormone in the classic sense, but it acts as a signalling molecule in metabolic pathways.

What purity should I look for in MOTS-c 10mg?

Most research suppliers aim for 98% or higher HPLC purity. The COA should include a chromatogram and mass spectrometry results for the exact batch you receive.

Can I use MOTS-c 10mg for human consumption?

No. MOTS-c is sold for research use only. It is not approved for human or veterinary use. Do not use it for any human application without medical supervision and legal approval.