MOTS-c Bulk Order: Minimum Quantity Requirements

Overview of MOTS-c as a Research Peptide

MOTS-c (Mitochondrial Open Reading Frame of the 12S rRNA-c) is a mitochondrial-derived peptide of 16 amino acids that has garnered considerable attention in metabolic and cell biology research. Encoded within the mitochondrial genome, this short linear peptide is thought to participate in retrograde signaling—communications from the mitochondrion to the nucleus—and has been detected in multiple tissues and circulating biofluids in model organisms. Its primary sequence, Met‑Arg‑Trp‑Gln‑Glu‑Met‑Gly‑Tyr‑Ile‑Phe‑Pro‑Arg‑Lys‑Leu‑Arg, is highly conserved, making it a compelling candidate for cross‑species studies of mitochondrial function.

In laboratory settings, synthetic MOTS-c is employed to probe fundamental pathways governing energy metabolism, including AMP‑activated protein kinase (AMPK) signaling and methionine cycle regulation. Researchers use the peptide in cell‑based and cell‑free models to examine shifts in mitochondrial respiration, glucose utilization, and fatty acid oxidation. Furthermore, its role is being mapped in longitudinal studies focusing on the molecular shifts observed during organismal aging and in the metabolic adaptations elicited by exercise. All investigations are conducted strictly in 体外 and non‑clinical research contexts; MOTS‑c is not manufactured for, nor is it intended for, any application in humans or animals.

What Defines a Bulk Order for MOTS-c?

Bulk orders of MOTS‑c typically encompass quantities that far exceed the single‑vial sizes used in initial characterization experiments. Whereas a standard research purchase might involve 1 mg, 5 mg, or 10 mg aliquots, a bulk order is generally understood to begin at the gram scale—often 1 gram or more of lyophilized peptide. Such volumes are necessary when laboratories run large‑scale screening assays, perform extensive pharmacological profiling, or require a consistent lot for multi‑year comparative studies.

Suppliers that specialize in peptide synthesis routinely offer bulk quantities in a series of practical increments. Common bulk sizes for MOTS‑c include:

• 5 grams
• 10 grams
• 25 grams
• 50 grams
• 100 grams
• Custom gram‑scale amounts tailored to specific project requirements

Opting for a bulk order provides economic advantages through significantly reduced cost per milligram. Manufacturing efficiency scales with batch size: once the solid‑phase synthesis, cleavage, and purification processes are established for a larger run, the marginal cost of additional peptide decreases. Bulk orders also allow the supplier to dedicate an entire synthesis column to a single project, minimizing cross‑contamination risk and ensuring batch uniformity. Lead times may be extended for very large quantities because of the need for more extensive lyophilization and quality‑control testing, but many suppliers prioritize bulk tickets to maintain smooth production flow.

Typical Minimum Order Quantity (MOQ) for MOTS-c

For a relatively short synthetic peptide like MOTS‑c, the industry‑standard minimum order quantity for a bulk purchase is commonly 1 gram. This threshold is feasible because 16‑amino‑acid chains can be assembled with high efficiency using Fmoc solid‑phase peptide synthesis (SPPS) on a multi‑gram scale without encountering severe aggregation or deletion problems. Suppliers offering “off‑the‑shelf” MOTS‑c often list a 1‑gram SKU as their entry‑level bulk size.

When a research group requires non‑standard modifications, higher purity, or the peptide is being synthesized as a custom project (rather than taken from existing inventory), the MOQ may rise. Some manufacturers set a floor of 5 grams or even 10 grams for a de novo synthesis run. This is partly because the purification step—typically reversed‑phase high‑performance liquid chromatography (RP‑HPLC)—can result in significant yield loss, especially when a customer demands a purity exceeding 98%. To deliver the requested amount at the specified purity, the crude synthesis must start from a larger mass, and the supplier will not proceed unless the total batch size justifies the operational effort. The precise MOQ also hinges on the supplier’s internal resin‑loading capacity and the footprint of their lyophilization equipment. Buyers evaluating suppliers should directly inquire whether the stated MOQ applies to catalog listings or to fully custom productions.

Factors Influencing MOTS-c Bulk MOQ

Several technical and logistical parameters determine the minimum order quantity a supplier will accept for bulk MOTS‑c:

• Purity grade requirements. Standard research‑grade purity of ≥95% can often be delivered from a modest crude synthesis. Demanding >99% purity forces the use of multiple purification steps (e.g., dual‑column HPLC), which reduces overall recovered mass; accordingly, the initial synthesis scale and the MOQ must be larger to ensure the final, highly pure product meets the desired gram quantity.
• Synthesis difficulty and modifications. While the wild‑type MOTS‑c sequence is relatively straightforward, any structural modification—such as N‑terminal acetylation, C‑terminal amidation, incorporation of stable isotope labels (¹³C, ¹⁵N), or attachment of fluorescent/biotin moieties—can lower coupling efficiencies or require more elaborate purification. These modifications increase the batch size needed to offset synthetic losses, effectively raising the MOQ.
• Packaging and formulation. A bulk order shipped as a single container of lyophilized powder demands less handling than dividing the same mass into hundreds of pre‑weighed vials. The latter involves additional steps such as sterile aliquoting under strict environmental controls, which may raise the MOQ because the supplier’s per‑gram returns diminish if the packaging overhead is too high. Some suppliers therefore offer lower MOQs for bulk powder compared to aliquoted presentations.
• Counter‑ion and residual solvent specifications. Researchers requiring a specific salt form (e.g., acetate vs. trifluoroacetate) or ultra‑low residual solvent levels may face a higher MOQ, as these requests often necessitate supplementary salt‑exchange or prolonged drying cycles that are economical only at larger scales.

How to Request a Bulk Order Quote for MOTS-c

A well‑prepared inquiry accelerates the quoting process and helps the supplier determine whether they can fulfill the order. Before contacting the manufacturer or distributor, a buyer should compile the following details:

• Target quantity in grams (or milligrams if quantifying small‑scale bulk).
• Purity specification (e.g., ≥95%, ≥98%, ≥99%) and the required analytical method (HPLC area‑percent purity).
• Sequence and modifications. Provide the exact amino acid sequence (1‑letter code: MRWQEMGYIFPRKLR) and specify any terminal capping, isotope labeling, or conjugate.
• Desired physical form. Lyophilized powder in a single bulk container or in n vials of equal mass, with requested fill volume and closure type.
• Delivery timeline. Indicating when the peptide is needed allows the supplier to confirm whether the order can be manufactured within a standard lead time (often 4–8 weeks for multi‑gram custom synthesis) or if an expedited service is required.
• Shipping and regulatory information. Provide the ultimate destination, as this affects documentation, freight mode, and any import permits.

Once the specifications are assembled, the buyer should reach out to the supplier’s business development or sales team using a professional communication that includes the researcher’s institutional affiliation, a brief description of the intended research (without revealing proprietary details), and the above‑mentioned parameters. The supplier will issue a formal quotation that outlines the price per gram, total amount, applicable packaging costs, estimated lead time, and the precise MOQ should it differ from the inquired amount. Buyers are advised to confirm that the quoted price includes a 分析证书, and to ask whether sample aliquots from the batch can be held for future analytical comparisons.

Custom Synthesis vs. Stock Availability

Suppliers differ in how they handle MOTS‑c bulk requests. Some maintain an inventory of catalog‑grade MOTS‑c in notable quantities—for instance, 1‑gram, 5‑gram, or 10‑gram lots—that can be dispatched within days to a few weeks. This stock model is practical for the unmodified wild‑type sequence that is in steady demand across academic and pharmaceutical research groups. Customers ordering from stock benefit from shorter turnaround and validated batch data, but may have limited flexibility regarding vial configuration or salt form.

Custom synthesis becomes the only route when the required peptide deviates from the standard sequence. Examples include isotopically labeled MOTS‑c for metabolomic tracing studies, fusion peptides, cyclic analogs, or variants containing non‑natural amino acids. Custom‑synthesis tickets invariably carry a higher minimum order quantity—commonly 10 grams or more—because the setup costs (resin preparation, amino acid derivatization, method development) must be amortized over a larger mass. Additionally, the lead time for custom projects is usually longer, as analytical methods must be validated specifically for the variant. Research groups needing only a few milligrams of a bespoke MOTS‑c analog may consider a small‑scale custom synthesis offer, often at a premium, but these are not considered bulk orders under the usual definition.

Compliance and Documentation for Bulk Orders

Purchasers of bulk MOTS‑c for research use should expect a comprehensive documentation package that supports both laboratory safety and regulatory compliance. The central document is the 分析证书（CoA）, which is batch‑specific and should contain:

• HPLC chromatogram and purity assessment (e.g., >98% at 220 nm).
• Mass spectrometry verification (ESI‑MS or MALDI‑TOF) with observed vs. theoretical molecular weight.
• Peptide content determined by amino acid analysis or nitrogen analysis.
• Solubility and appearance (e.g., white to off‑white lyophilized powder).
• Residual trifluoroacetic acid (TFA) and water content (Karl Fischer titration).
• Batch/lot number and manufacturing date.

A 材料安全数据表（MSDS）, often termed Safety Data Sheet (SDS), is typically provided or available for download. It outlines proper handling (e.g., use in a fume hood, wear gloves and protective eyewear), storage recommendations (lyophilized powder at –20 °C, protected from moisture and light), and emergency procedures. Many institutions also require this document as part of their chemical hygiene plan.

For international shipments, the buyer and supplier must jointly abide by the import/export regulations of the originating and destination countries. While MOTS‑c is not listed on international controlled‑substance schedules in most jurisdictions, customs authorities occasionally scrutinize large quantities of synthetic peptides. To avoid clearance delays, the shipper’s export documentation should clearly state: “Synthetic peptide for 体外 research use only. Not for human or veterinary application.” An invoice, packing list, and signed declaration of intended use are standard. Some countries additionally require an import permit or a letter from the receiving institution. Buyers should consult their institutional biosafety or compliance office well before the order is placed.

Frequently Asked Questions About MOTS-c Bulk Orders

What is the typical MOQ for MOTS‑c?
The standard minimum order quantity for a bulk purchase is 1 gram. However, this figure can vary; some suppliers set a 5‑gram floor for custom synthesis runs, especially when modifications or extremely high purity are requested. Always verify the MOQ with the specific supplier you are contacting.

Can I order smaller quantities for preliminary studies?
Yes. Most peptide suppliers offer MOTS‑c in milligram‑scale vials (e.g., 1 mg, 5 mg, 10 mg) for feasibility experiments and dose‑response profiling. These smaller lots are not classified as bulk orders and therefore do not benefit from bulk pricing. When a project progresses and the need for a uniform large batch becomes clear, you can transition to a bulk order using the same supplier to maintain consistency.

How is MOTS‑c shipped and stored?
MOTS‑c is typically shipped as a lyophilized powder at ambient temperature. Because the dry peptide is chemically stable for short periods at room temperature, this mode of transport preserves its integrity. Upon receipt, the container should be transferred to a –20 °C freezer for long‑term storage, away from humidity and light. After reconstitution in an appropriate solvent (e.g., sterile PBS, pH 7.4, or DMSO for stock solutions), the peptide solution should be aliquoted and stored at –20 °C or –80 °C, with care taken to avoid repeated freeze‑thaw cycles.

Does MOTS‑c come with a reliable purity guarantee?
Reputable manufacturers provide a CoA that specifies the batch‑specific purity measured by HPLC. For bulk orders, purities of ≥95% or ≥98% are standard, with ≥99% available upon request. The CoA also includes mass identity confirmation, so you can be confident in both the composition and the exact molecular weight of the material you receive.

What information does the supplier need to begin a bulk synthesis?
In addition to the desired quantity and purity, they will ask for the full sequence, any terminal modifications, the required salt form, and the preferred packaging configuration. Providing a target delivery date and the destination country helps the supplier schedule the synthesis and prepare all necessary shipping documents.

Research use only note: All products and information presented herein are strictly for laboratory research purposes. MOTS‑c is intended for in vitro experimentation by qualified professionals and is not for use in humans, animals, or any clinical application. Compliance with applicable institutional, national, and international regulations is the sole responsibility of the purchaser.

仅限研究用途。不得用于人类或兽医用途。.