KPV 60mg — Vial Spec, Reconstitution Math & COA

Overview of KPV (Lys-Pro-Val) and 60mg Mass Format

KPV is a C-terminal tripeptide derived from alpha-melanocyte-stimulating hormone (α-MSH), comprising the amino acid sequence Lysine-Proline-Valine. In preclinical research, this shortened peptide sequence retains significant anti-inflammatory signaling capability while eliminating the melanogenic activity associated with the full-length α-MSH parent molecule. The 60mg mass specification provides principal investigators with a concentrated supply suitable for high-density assays or longitudinal experimental designs without introducing lot-to-lot variability.

When dealing with a 60mg net peptide content per vial, researchers achieve higher stock concentrations per unit volume, which minimizes solvent volume addition in cell culture assays or microfluidic setups. KPV interacts heavily with intracellular signaling pathways following cellular entry, making consistent millimolar (mM) or micromolar (µM) stock preparation a primary experimental requirement.

PX1 Product Availability Notice: 10mg Standard vs. High-Mass Fills

PX1 Research maintains a core inventory of standard mass fills, including our flagship KPV 10mg research vial, which satisfies the majority of analytical protocol requirements. While 60mg represents a custom or high-density format evaluated for specific high-throughput applications, investigators seeking immediate dispatch can access our standard catalog via the full PX1 research peptide catalog.

For laboratories requiring specialized high-yield fills, custom batch runs, or bulk volume allocations matching the 60mg specification, inquiries can be submitted directly through our bulk research program. All standard and custom fills undergo identical ISO 17025 analytical testing, ensuring uniform quality regardless of total peptide mass per vial.

Molecular Mechanism & Preclinical Targets

Preclinical studies indicate that KPV exerts its biological effects primarily through the modulation of key inflammatory pathways, particularly within intestinal epithelial cells and dermal tissue models. Research demonstrates that KPV enters targeted cells via the oligopeptide transporter PepT1 (SLC15A1). Once internalized, the tripeptide inhibits the activation and nuclear translocation of nuclear factor kappa B (NF-κB), a master transcription factor responsible for inflammatory gene expression.

In vitro data show that PepT1-mediated transport of KPV downregulates the expression of pro-inflammatory cytokines, including TNF-α, IL-6, and IL-1β. Furthermore, animal studies using rodent models of colitis suggest that mucosal application or systemic administration of KPV attenuates histological tissue damage, preserves tight junction protein expression (such as ZO-1 and occludin), and reduces myeloperoxidase (MPO) activity within inflamed tissues. Researchers utilize this compound extensively to examine barrier restoration mechanisms in gut inflammation models.

Reconstitution Math & Concentration Calculations

Accurate reconstitution of a 60mg KPV vial requires precise volumetric diluent measurement to yield target concentration stock solutions. Given the molecular weight of KPV (approximately 341.44 g/mol for the free base form), concentration calculations can be expressed in both mass-per-volume (mg/mL) and molarity (mM). Researchers can verify calculations using the interactive peptide reconstitution calculator.

Below are standard reconstitution outcomes when adding 1.0 mL, 2.0 mL, or 3.0 mL of sterile diluent (such as Bacteriostatic Water or 0.9% Sodium Chloride) to a 60mg lyophilized KPV vial:

1.0 mL Diluent Addition: Yields a final concentration of 60.0 mg/mL. In molar terms, this corresponds to approximately 175.7 mM. This high-density stock is ideal for aliquoting minimal volumes into concentrated master mixes.

2.0 mL Diluent Addition: Yields a final concentration of 30.0 mg/mL (approximately 87.8 mM). This mid-range concentration facilitates precise pipetting when preparing serial dilutions for 96-well or 384-well cell culture plates.

3.0 mL Diluent Addition: Yields a final concentration of 20.0 mg/mL (approximately 58.5 mM). This lower stock concentration is preferred when working with sensitive volumetric instruments or larger working volumes in tissue bath preparations.

Aliquoting, Liquid Handling, and Hydrolytic Stability

Because KPV is a short, hydrophobic-hydrophilic hybrid tripeptide, repeated freeze-thaw cycles of reconstituted liquid solutions can lead to peptide degradation or aggregation over extended experimental timelines. To maintain concentration integrity across multiple assays, laboratory protocols recommend immediate aliquoting following initial reconstitution.

Reconstituted stock solutions should be divided into single-use microcentrifuge tubes (e.g., polypropylene low-binding tubes) at concentrations suited for daily protocols. Avoid using glass containers for extremely dilute working solutions due to potential non-specific peptide adsorption to glass surfaces. Detailed reconstitution guidelines and stability data are archived within our peptide research hub.

Quality Control Verification: COA, HPLC/MS, and Endotoxin Testing

PX1 Research subjects every synthesis lot to independent, third-party analytical verification before release. Every vial shipped is tied to a lot-matched Certificate of Analysis accessible via our certificate of analysis database. Our quality assurance workflow ensures that laboratory researchers receive verified reagents that yield reproducible scientific outcomes.

Purity is quantified using High-Performance Liquid Chromatography (HPLC) coupled with Mass Spectrometry (MS) to verify molecular mass identity. PX1 guarantees a minimum purity of ≥98.0% by HPLC area under the curve (AUC). Additionally, because KPV is frequently studied in epithelial barrier and immune signaling protocols where bacterial lipopolysaccharide (LPS) can invalidate results, all lots undergo kinetic chromogenic Limulus Amebocyte Lysate (LAL) testing to ensure endotoxin levels remain below strictly defined laboratory limits (<0.01 EU/mg).

Comparative Analysis: KPV vs. Related Mucosal and Anti-Inflammatory Compounds

When evaluating agents for intestinal integrity or localized anti-inflammatory research, investigators frequently compare KPV with other established research peptides. Understanding the distinct mechanisms of these compounds allows researchers to select the optimal peptide or combination for their experimental models.

For instance, while KPV focuses on PepT1 transport and intracellular NF-κB inhibition, BPC-157 operates primarily through angiogenic pathways, FAK-paxillin signaling, and growth factor upregulation in gut repair models. Concurrently, Larazotide acetate acts as a tight junction regulator by antagonizing zonulin pathways to prevent junctional disassembly. Evaluating KPV alongside these molecules provides a multi-target approach for researching complex mucosal barrier phenotypes.

Storage Protocols for Lyophilized and Reconstituted KPV Vials

Lyophilized KPV powder exhibits excellent long-term stability when stored under appropriate environmental controls. Unopened vials should be stored at -20°C in a dry environment away from light exposure, where they remain stable for up to 24 months from the date of manufacture. For long-term archiving, storage at -80°C is recommended.

Once reconstituted with bacteriostatic diluent containing 0.9% benzyl alcohol, working solutions should be refrigerated at 2°C to 8°C and used within 28 days. Liquid aliquots stored at -20°C without repeated freeze-thaw exposure remain stable for up to 3 to 6 months. Desiccant packs should be kept inside storage containers to prevent moisture absorption during retrieval.

Analytical Instrumentation & Quality Standards at PX1 Research

PX1 Research operates within USA-manufactured, GMP-compliant facilities utilizing ISO 17025 accredited laboratory testing standards. Our commitment to scientific integrity ensures that every research peptide vial—whether standard fill or high-yield format—meets rigorous chemical and biological specifications.

Orders are dispatched directly from our dual logistics centers in California and Arizona, offering same-day shipping for orders placed before cutoff times Monday through Friday. Researchers can rely on PX1 for transparent analytical documentation, consistent batch-to-batch reproducibility, and specialized customer support for academic, industrial, and clinical research institutions.