What Should I Know Before Buying SS-31?
Before purchasing SS-31 for laboratory investigation, researchers must verify lot-specific analytical data, vendor synthesis standards, and compliance status. PX1 Research supplies high-purity SS-31 validated by third-party HPLC, mass spectrometry, and endotoxin testing. Every order includes a downloadable Certificate of Analysis and ships same-day Monday through Friday from our California and Arizona logistics facilities.
Quick answer
Before purchasing SS-31 for laboratory investigation, researchers must verify lot-specific analytical data, vendor synthesis standards, and compliance status. PX1 Research supplies high-purity SS-31 validated by third-party HPLC, mass spectrometry, and endotoxin testing. Every order includes a downloadable Certificate of Analysis and ships same-day Monday through Friday from our California and Arizona logistics facilities.
Key takeaways
- Sourcing high-purity peptides for preclinical research requires evaluating verified analytical metrics rather than relying on vendor assertions.
- [SS-31](/research-peptides/ss-31), historically designated as elamipretide or Bendavia, is a synthetic tetrapeptide belonging to the Szeto-Schiller (SS) peptide family.
- Peptide purity directly influences experimental reproducibility.
- A [Certificate of Analysis](/research-peptides/what-is-a-coa-for-peptides) (COA) is only meaningful if it corresponds directly to the specific lot number printed on your product vial.
Quick Answer: Key Factors When Buying SS-31 for Research
Sourcing high-purity peptides for preclinical research requires evaluating verified analytical metrics rather than relying on vendor assertions. When evaluating what to know before buying SS-31, primary considerations include verified peptide purity (exceeding 98% via High-Performance Liquid Chromatography), structural verification via Mass Spectrometry, low endotoxin levels, and transparent lot traceability.
Researchers should confirm that the peptide is supplied in a stable, lyophilized format inside sealed, vacuum-packed glass vials to preserve molecular integrity during transit. Furthermore, domestic suppliers providing same-day dispatch and traceable shipping help prevent degradation caused by extended shipping times or international customs holds.
PX1 Research delivers laboratory-grade compounds designed strictly for in vitro and animal model research. Investigators looking to buy SS-31 online from PX1 Research receive fully documented materials backed by independent, lot-specific analytical reports accessible prior to shipment.
What Is SS-31 (Elamipretide) in Preclinical Research?
SS-31, historically designated as elamipretide or Bendavia, is a synthetic tetrapeptide belonging to the Szeto-Schiller (SS) peptide family. Its chemical structure features an alternating aromatic-cationic sequence (D-Arg-dimethylTyr-Lys-Phe-NH2) engineered to target the inner mitochondrial membrane.
In preclinical model systems, SS-31 preferentially interacts with cardiolipin, an essential phospholipid localized in the inner mitochondrial membrane. Preclinical studies suggest that cardiolipin binding stabilizes cristae architecture, optimizes electron transport chain kinetics, and reduces the excess generation of reactive oxygen species (ROS) under conditions of cellular stress.
Because of its unique membrane-penetrating characteristics, ss31 serves as a fundamental benchmark in biochemical investigations centered on mitochondrial bioenergetics, cellular aging, and oxidative stress pathways. Researchers examining energy homeostasis frequently compare SS-31 with other mitochondrial-targeted compounds in our catalog of research peptides.
What Purity Standards Should You Require for SS-31?
Peptide purity directly influences experimental reproducibility. For rigorous cellular assays and preclinical model testing, standard technical grade reagents (80–90% purity) are unsuitable, as residual synthesis side-products, TFA counterions, or truncated sequences can alter biological responses.
Laboratory standards require an HPLC-verified purity profile of at least 98.0%. High-Performance Liquid Chromatography separates the target molecule from structurally related impurities, displaying distinct UV absorbance peaks that quantify the exact percentage of the target peptide sequence.
In addition to purity, mass verification via Mass Spectrometry (MS) confirms that the synthesized sequence matches the theoretical molecular weight of SS-31 (MW approx. 639.8 g/mol). PX1 Research subjects every batch to rigorous dual-testing to ensure that the chemical profile perfectly matches theoretical specifications.
How to Verify Lot Traceability and Certificate of Analysis Data
A Certificate of Analysis (COA) is only meaningful if it corresponds directly to the specific lot number printed on your product vial. Generic or template COAs provided by unverified vendors fail to satisfy rigorous laboratory quality controls.
When auditing an SS-31 COA, procurement teams should verify four core analytical data points: exact HPLC purity percentage, mass spectrometry peak confirmation, batch synthesis date, and quantitative endotoxin testing. Endotoxin contamination (measured in EU/mg) is critical for cell culture models, as bacterial lipopolysaccharides (LPS) induce inflammatory signaling pathways that skew research results.
PX1 Research hosts full, unredacted COAs for every active lot. Researchers can inspect analytical testing documentation directly before placing an order to ensure total compliance with institutional auditing requirements.
Vendor Evaluation Criteria: What Separates Research-Grade Suppliers?
Selecting a reliable vendor requires systematic comparison against established technical criteria. The following structural matrix outlines the differences between high-grade research suppliers like PX1 Research and secondary resellers:
- Purity Verification: High-grade suppliers provide lot-specific HPLC chromatograms showing >98% purity, whereas unverified suppliers present generic static images or unverified claims. - Structural Confirmation: Reliable vendors perform Electrospray Ionization Mass Spectrometry (ESI-MS) to verify precise molecular weight; low-tier vendors omit structural verification. - Endotoxin Assay: Premium suppliers publish quantitative Chromogenic LAL assay data (<0.01 EU/mg) for cellular safety; generic suppliers fail to measure endotoxin burden. - Origin & Synthesis: Domestic synthesis and processing prevent degradation and contamination, while drop-shippers rely on unvetted overseas white-labeling. - Shipping Speed & Logistics: Established suppliers dispatch same-day from domestic hubs (e.g., California and Arizona), whereas secondary vendors introduce multi-week transit delays. - Technical Documentation: Professional suppliers provide immediate access to Safety Data Sheets (SDS), lot numbers, and downloadable COAs per order.
By applying these criteria during vendor selection, procurement managers can eliminate batch-to-batch variability and protect research budgets from unverified materials.
What Red Flags Should Lab Procurement Avoid When Sourcing SS31?
The online reagent market contains numerous vendors operating without strict laboratory quality control. Recognizing operational red flags ensures that your laboratory avoids contaminated or mislabeled peptides.
Be cautious of vendors offering peptides without batch-specific COAs, suppliers using blurred or recycled analytical reports, and entities making explicit human administration or therapeutic claims. Legitimate vendors restrict all sales strictly to laboratory research use only.
Additional red flags include shipping peptides in pre-reconstituted liquid solutions without specialized cold-chain controls, lack of clear contact information or domestic business registration, and missing lot numbers on vial labels. Sourcing 10 mg vials of SS-31 from PX1 Research guarantees full batch traceability, secure glass vial packaging, and pure lyophilized peptide matrix.
Which Vial Sizes and Configurations Are Best for In Vitro Protocols?
Lyophilized SS-31 is commonly packaged in unit mass allocations suited for specific experimental workflows. Choosing the correct vial mass minimizes unnecessary freeze-thaw cycles after reconstitution.
For standard cell culture assays or small animal cohort studies, 10 mg vials provide an optimal balance between volumetric preparation flexibility and shelf-life preservation. Preparing concentrated stock solutions from 10 mg aliquots allows researchers to store working sub-aliquots at -80°C without repeatedly thawing the primary stock.
When planning large-scale high-throughput screenings or multi-center research projects, procurement officers can contact our team regarding bulk research peptide ordering to secure uniform lot numbers across large unit volumes.
How Should Lyophilized SS-31 Be Stored and Handled in the Laboratory?
Proper handling preserves the chemical stability and biological activity of SS-31. Upon arrival at your research facility, lyophilized peptide vials should be stored in a dry, dark location at -20°C for short-to-medium term preservation, or -80°C for long-term storage.
Before opening or reconstituting the vial, allow the container to acclimate to room temperature inside a desiccator chamber. This step prevents ambient moisture from condensing on the lyophilized cake, which can accelerate hydrolytic degradation.
Reconstitution should be performed using sterile Bacteriostatic Water or sterile phosphate-buffered saline (PBS), depending on the specific demands of your in vitro assay protocol. Once dissolved, liquid stock solutions should be divided into single-use aliquots and maintained at -80°C, avoiding repeated freeze-thaw cycles that can break down peptide bonds.
How Does SS-31 Compare to Other Mitochondrial Research Peptides?
In mitochondrial physiology, SS-31 operates through distinct biophysical pathways compared to other signaling compounds like MOTS-c or cellular cofactors like NAD+.
While SS-31 functions primarily by binding cardiolipin to preserve cristae structure and suppress electron transport chain ROS leakage, peptides such as MOTS-c act as nuclear-encoded mitochondrial signals that modulate metabolic gene transcription under stress conditions. Researchers often combine these distinct mechanisms in comparative metabolic assays.
Similarly, cofactors like NAD+ regulate sirtuin activation and enzymatic oxidation-reduction states rather than directly stabilizing membrane lipid architecture. For comprehensive experimental designs, exploring our full mitochondrial research catalog helps teams select synergistic compounds.
What Are the Legal and Compliance Requirements for Purchasing SS-31?
SS-31 (elamipretide) supplied by PX1 Research is strictly manufactured and distributed for laboratory research use only (RUO). It is intended exclusively for in vitro biological testing, biochemical analysis, and preclinical animal models conducted by qualified scientific investigators.
The compound is not approved for human consumption, clinical diagnostic procedures, therapeutic administration, or veterinary use. Attempting to utilize research peptides for clinical applications violates federal compliance guidelines and institutional IRB standards.
Purchasing entities must maintain appropriate laboratory facilities, containment equipment, and qualified personnel capable of handling chemical reagents safely. Detailed compliance and handling guidelines are outlined in our educational peptide research documentation.
Ordering SS-31 from PX1 Research
PX1 Research streamlines procurement for university labs, private biotechnology firms, and contract research organizations (CROs). Every order of SS-31 is packed in tamper-evident, sealed glass vials containing vacuum-lyophilized peptide powder, engineered for maximum stability during transit.
Orders placed before 3:00 PM EST Monday through Friday are processed and dispatched the exact same day from our dedicated dispatch centers in California and Arizona. We offer tracked domestic shipping across the United States, ensuring rapid, reliable delivery to your laboratory receiving dock.
Every batch includes instant online access to its lot-specific Certificate of Analysis covering HPLC purity, mass spectrometry, and endotoxins. If you have questions regarding technical specifications, volume pricing, or delivery tracking, our technical support team responds within hours. Visit our primary catalog today to order SS-31 for laboratory research.
Frequently Asked Questions
Is SS-31 legal to buy for laboratory research in the US?
Yes. SS-31 is legal to purchase within the United States when acquired strictly for laboratory research, in vitro experimentation, and scientific investigation by qualified research entities. It is explicitly not for human or clinical use.
What is the difference between SS-31 and elamipretide?
SS-31 and elamipretide refer to the exact same chemical tetrapeptide sequence (D-Arg-dimethylTyr-Lys-Phe-NH2). 'SS-31' is the standard scientific laboratory designation, while 'elamipretide' is the generic chemical name used in biomedical literature.
Do you provide a lot-specific COA with every SS-31 order?
Yes. PX1 Research provides a lot-specific Certificate of Analysis for every batch of SS-31. COAs detail third-party HPLC purity analysis, mass spectrometry molecular weight confirmation, and quantitative endotoxin testing results.
How fast does PX1 Research ship SS-31 orders?
Orders placed before 3:00 PM EST Monday through Friday ship the same day from our California or Arizona facilities. Transit times typically range from 1 to 3 business days via tracked domestic carrier shipping.
What purity level is required for SS-31 in vitro experiments?
In vitro and cellular assay protocols generally require an HPLC-verified purity of 98.0% or higher. High purity ensures that cell culture responses are driven strictly by the active peptide rather than synthetic sequence artifacts.
How should lyophilized SS-31 vials be stored upon arrival?
Lyophilized SS-31 vials should be stored unopened at -20°C for short-term handling or -80°C for long-term storage, protected from light and ambient moisture to maintain maximal chemical integrity.
Is SS-31 supplied as a liquid or lyophilized powder?
PX1 Research supplies SS-31 exclusively as a stable, lyophilized (freeze-dried) powder in sealed glass vials to prevent hydrolytic degradation during storage and transit.
Can I purchase SS-31 in bulk for high-throughput screening?
Yes. PX1 Research accommodates institutional bulk procurement for large-scale research projects. Contact our team through our wholesale portal to request bulk quantity pricing and single-lot scheduling.
All products are sold strictly for laboratory and research use only. Not for human or veterinary use, diagnosis, treatment or consumption. Statements have not been evaluated by the FDA.