A common question in peptide research is how long MOTS-c remains usable after reconstitution. There is no single universal figure — stability in solution depends on how the material is handled and stored, not on the calendar alone. This is a general research overview, for laboratory use only.
Why there is no single answer
MOTS-c is supplied as a lyophilised powder, which is comparatively stable. Once reconstituted, the peptide enters solution and becomes more vulnerable to the environmental factors below. Two laboratories storing the same peptide under different conditions can see very different usable windows, which is why a fixed “days after reconstitution” number is misleading.
What affects peptide stability in solution?
- Temperature — refrigeration at 2-8°C slows degradation; room temperature accelerates it.
- Freeze-thaw cycles — repeated freezing and thawing is one of the most damaging things for a peptide in solution.
- Light and oxygen — exposure can promote breakdown, so shielded storage helps.
- Solvent — bacteriostatic water limits microbial growth in multi-use vials compared with plain sterile water.
- pH and contamination — a clean preparation in an appropriate solvent degrades more slowly than a contaminated one.
Extending usable life with aliquoting
Where a reconstituted solution will be used over a longer period, dividing it into single-use aliquots before freezing is the most effective way to protect it. Each aliquot is thawed only once, so the bulk of the material never experiences repeated freeze-thaw cycles. Label each aliquot with the date and concentration.
Signs of degradation
Cloudiness, visible particles, or a solution that no longer behaves as expected in an assay can indicate degradation or contamination. When in doubt, researchers typically prepare fresh material rather than risk confounded results.
Practical takeaway
In research handling, reconstituted peptides such as MOTS-c are generally kept refrigerated at 2-8°C, protected from light, and used within a planned window rather than stored indefinitely. The lyophilised vial itself is kept at -20°C until needed. Our reconstitution calculator can help plan aliquot volumes so you only reconstitute what a given experiment requires.
Frequently asked questions
There is no single fixed figure; stability in solution depends on storage. Refrigeration at 2-8°C, protection from light, and minimising freeze-thaw cycles all extend usable life.
Repeated freeze-thaw cycles, warmth, and exposure to light and air. Aliquoting before freezing helps avoid repeated thawing of the whole batch.
For short-term use, refrigerate at 2-8°C. For longer storage, aliquot and freeze so each portion is thawed only once.
Research-grade MOTS-C
Greater than 99% purity, lyophilised powder, same-day dispatch before 3PM with tracked UK & EU delivery. Research use only.
Shop MOTS-C →Disclaimer: All products supplied by PurePeptides are strictly for laboratory research use only. They are not for human or animal consumption and are not medical products. This article is informational and is not medical, clinical, or dosing advice.