Sourcing guide · research use only
Where to buy MOTS-c for research.
MOTS-c is a sixteen-residue mitochondrial-derived peptide studied in laboratory research, and two facts about its chemistry change what a real certificate of analysis has to prove. First, it belongs to a small family of look-alike mitochondrial-derived peptides — so identity, confirmed by mass spectrometry, comes before any purity number. Second, it carries two methionines that oxidize easily, a +16-dalton change a purity line can miss. This guide covers what to verify before buying MOTS-c, why its COA has to catch oxidation, and the documented in-catalog research peptides Titan stocks instead. It makes no human-use, dosing, or efficacy claims.
Before you buy
What a MOTS-c COA must prove.
A MOTS-c document has to do everything a short-peptide COA does — confirm a sixteen-residue sequence by mass spec — and then prove the two things this peptide makes harder: that you received MOTS-c and not a sibling mitochondrial-derived peptide, and that the batch is not quietly oxidized. Run any MOTS-c listing against this table before you trust the purity number on it.
| What to check | What a real COA shows | Red flag |
|---|---|---|
| Sequence identity (MS) | Mass spectrometry confirming the exact sixteen-residue MOTS-c sequence — it belongs to a small family of mitochondrial-derived peptides (humanin and the SHLP series), so the document has to prove it is MOTS-c and not a co-studied sibling of similar size | A purity percentage with no mass-spec identity, on a peptide whose closest research relatives are easy to confuse it with |
| Methionine-oxidation check | MOTS-c carries two methionine residues that readily oxidize to methionine sulfoxide (a +16 Da shift). The MS data should resolve the intact peptide from any oxidized species — an oxidized MOTS-c is a chemically altered molecule that a single purity number will quietly pass | An identity claim with no mass detail at all, so an oxidized batch reads as "correct" on paper |
| Purity figure (HPLC) | Purity stated with an HPLC chromatogram shown and the method named, run against the correct sixteen-residue peptide — not a marketing round number | "99%+" with no chromatogram, no method, no reference to the actual sequence |
| Net-peptide content & handling | MOTS-c is a relatively hydrophobic peptide, so documentation should address net-peptide content (peptide vs salt/water mass) and handling of the lyophilized material — relevant for a research compound that is not trivially soluble | Silent on net-peptide content or handling, so the milligram figure may be mostly counter-ion and moisture |
| Lot / batch + compliance | A lot code matching the unit you receive, with documentation silent on human use | A generic reused COA, a mismatched lot, or human-use / dosing / metabolic-benefit claims |
MOTS-c is a mitochondrial-derived peptide — identity is the whole game
MOTS-c is a sixteen-residue peptide encoded within the mitochondrial 12S rRNA region, studied in laboratory research as one of a small group of mitochondrial-derived peptides alongside humanin and the SHLP series. Those relatives are co-studied and structurally adjacent, which is exactly why the one thing a MOTS-c certificate of analysis must do is confirm the full sixteen-residue sequence by mass spectrometry — proving you received MOTS-c specifically, not a similarly sized sibling peptide that a bare purity number would never distinguish.
How to read a COA →Why a MOTS-c COA has to catch oxidation
MOTS-c contains two methionine residues, and methionine is the residue most prone to oxidation — converting to methionine sulfoxide with a small +16-dalton mass change. An oxidized batch keeps almost the same chain and can look clean on an HPLC purity line, yet it is a chemically altered molecule. A serious MOTS-c document shows mass-spec data that resolves the intact peptide from oxidized species, so the verification point most listings skip is the one this peptide needs most.
What a documented supplier looks like →What Titan stocks instead
Titan does not currently list MOTS-c. Rather than ship a compound it does not test in-house, this guide points researchers to the documented in-catalog options and to the verification standard that applies to any peptide source. For metabolic-research interest Titan stocks retatrutide, a triple-agonist research peptide supplied lot-matched to a COA; the broader catalog spans documented research compounds you can check against the same identity-first standard described here.
Retatrutide for sale →Red flags on MOTS-c listings
Walk away from any MOTS-c source whose documentation carries metabolic, exercise, mitochondrial-benefit, or other human-use claims — that is a compliance red flag, not a quality spec. Be skeptical of a purity number with no chromatogram or mass-spec identity for a peptide so easily confused with its siblings, a document that says nothing about oxidation on a two-methionine sequence, a missing net-peptide content figure, a reused generic COA, or a lot code that does not match the unit.
Verify a COA →How Titan fulfills research orders
Documented, lot-matched, crypto checkout.
- 1. Verify the document before the molecule. For a mitochondrial-derived peptide, confirm the COA shows a chromatogram, names the HPLC method, confirms identity by mass spectrometry, and resolves the intact sixteen-residue peptide from oxidized species — a two-methionine sequence is more than a residue list and a percentage.
- 2. Lot-matched documentation. Titan’s in-catalog research compounds ship referenced to a batch code with an HPLC purity target and identity confirmation, so you can check the paper against the unit.
- 3. Crypto-only checkout. USDC, BTC, and SOL accepted; stablecoin keeps the total fixed from cart to on-chain confirmation.
- 4. Verify it yourself. Match the lot code to the unit and read the chromatogram and mass data — don’t accept a purity number on a sibling-prone, oxidation-prone peptide without them.
MOTS-c is a sixteen-residue mitochondrial-derived peptide studied in laboratory research. Titan does not currently stock it; this guide explains the verification standard and points to the documented in-catalog research compounds Titan does carry, all HPLC-verified and lot-matched. Everything here is supplied strictly for research use only, with no human-use, dosing, or efficacy claims. This page is about sourcing and verification, not use.
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