Free shipping on all orders HPLC verified ≥97% purity Certificate of Analysis included Anonymous checkout Free shipping on all orders HPLC verified ≥97% purity Certificate of Analysis included Anonymous checkout Free shipping on all orders HPLC verified ≥97% purity
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Research Peptide Supplier · Est. 2018

High-Purity Synthetic Peptides for In-Vitro Research

23 compounds available · HPLC-verified ≥97% purity · Certificate of Analysis included with every order

≥97% HPLC Purity
23 Compounds
COA Every Order
MS Mass Spec Verified

Quality Assurance

All peptides are synthesized using solid-phase peptide synthesis (SPPS) and purified to ≥97% via reverse-phase HPLC. Each batch undergoes mass spectrometry confirmation and amino acid analysis.

Storage & Handling

All compounds are supplied as lyophilized powder in sealed vials. Store unopened at -20°C for maximum stability. Once reconstituted, aliquot to avoid freeze-thaw cycles.

Product Catalog

23 compounds

Frequently Asked Questions

All peptides undergo HPLC analysis and are verified at ≥97% purity before shipping. A Certificate of Analysis (COA) is included with every order documenting exact purity percentage and analytical results.

Orders ship within 24 hours via tracked shipping. All packages are discrete with no external branding. Shipping is free on every order, worldwide.

No. All products are sold strictly for in-vitro laboratory research use only. They are not intended for human consumption, veterinary use, or any in-vivo application. Purchasers must confirm they are 21+ and agree to our research use terms.

Yes. If there is any issue with purity, quantity, or damage during shipping, we offer full replacements or refunds. Contact our team within 30 days of delivery with your order number and a description of the issue.

We accept credit and debit cards (Visa, Mastercard, Amex), Zelle, CashApp, and cryptocurrency. All transactions are processed securely with industry-standard encryption.

Unopened lyophilized peptides should be stored at -20°C in a desiccated environment. Once reconstituted, aliquot the solution into single-use volumes and store at -20°C. Avoid repeated freeze-thaw cycles as they accelerate degradation.

A COA is a quality document issued for each batch of peptide. It includes HPLC purity percentage, mass spectrometry data confirming molecular identity, appearance description, lot number, and manufacturing date. Every order ships with the corresponding COA.

Yes. We ship to most countries worldwide. International orders are dispatched with tracked shipping and typically arrive within 5 to 12 business days depending on destination and customs processing times.

Domestic orders typically arrive within 2 to 5 business days. International shipping ranges from 5 to 12 business days. All orders include tracking information sent via email upon dispatch.

Lyophilized peptides stored at -20°C have a shelf life of approximately 24 to 36 months from the date of manufacture. Once reconstituted, solutions should be used within 4 to 8 weeks when stored properly at -20°C.

Yes. We offer custom synthesis services for sequences not in our standard catalog. Contact us with your desired sequence, purity requirements, and quantity. Custom orders typically require 2 to 4 weeks for production depending on complexity.

High-Performance Liquid Chromatography (HPLC) is the gold-standard purification technique for peptides. It separates peptide products based on hydrophobicity, removing synthesis byproducts, truncated sequences, and other impurities to achieve ≥97% purity.

Add sterile or bacteriostatic water slowly to the vial wall, not directly onto the powder. Gently swirl until fully dissolved and do not vortex. Calculate the required volume based on your desired concentration. Filter through a 0.22 μm syringe filter if needed for sterility.

Research Use Only (RUO) indicates that these products are manufactured and sold exclusively for in-vitro laboratory research purposes. They have not been approved by the FDA or any regulatory body for therapeutic, diagnostic, or human use.

Yes. We provide volume discounts for research institutions, academic labs, and repeat customers. Contact our sales team with your requirements for a custom quote. Minimum order quantities may apply for wholesale pricing tiers.

The key values are the observed molecular weight (MW) and the expected theoretical MW. These should match within ±1 Dalton. The report may also show m/z values for various charge states, all of which should correspond to the correct molecular weight of your target peptide.

TFA (trifluoroacetic acid) salt is the default form after HPLC purification. Acetate salt is produced through a counter-ion exchange process. Acetate salt is preferred for cell-based assays where TFA may cause cytotoxicity at higher concentrations.

Due to the nature of our products and quality control requirements, opened products cannot be returned. Unopened products in original sealed packaging may be returned within 14 days of delivery for a full refund.

Yes. Safety Data Sheets are available for all products upon request. SDS documents include hazard classification, handling precautions, storage requirements, and first aid measures in compliance with GHS standards.

Bacteriostatic water is sterile water containing 0.9% benzyl alcohol as a preservative. It is preferred for reconstituting peptides that will be stored and used over multiple sessions, as the preservative inhibits microbial growth. For single-use applications, sterile water for injection is also acceptable.

Identity is verified through mass spectrometry by comparing the observed molecular weight against the theoretical weight. Additional confirmation can be obtained through amino acid analysis or peptide sequencing. Our COA provides the mass spec data for each batch.

There is no minimum order for our standard catalog products. Single-vial orders are welcome. For custom synthesis, minimum quantities depend on the specific peptide and synthesis complexity.

Yes. Expedited shipping options are available at checkout for domestic orders. Overnight and 2-day shipping are available for time-sensitive research needs. Expedited international shipping is available to select destinations.

Always work in a clean environment using sterile technique. Use dedicated syringes and vials for each peptide. Wear nitrile gloves and avoid touching vial openings. Wipe septum caps with alcohol swabs before each puncture. Never share reconstitution supplies between different compounds.

Every batch undergoes a multi-step QC process including HPLC purity analysis, mass spectrometry identity confirmation, visual appearance inspection, and gravimetric weight verification. Products must meet our ≥97% purity threshold before release. All results are documented on the batch-specific COA.

All products sold by NXPeptides are intended strictly for in-vitro laboratory research purposes only. Not for human consumption, veterinary use, or any in-vivo application. Purchasers must be 21+.