Looking for an authentic oxytocin research peptide for sale for laboratory research? PX1 Research provides high-purity, USA-manufactured oxytocin (>98% purity verified via RP-HPLC and ESI-MS) accompanied by lot-specific certificates of analysis. Designed strictly for in vitro binding assays and preclinical receptor signaling models, our formulations undergo rigorous endotoxin testing to ensure consistent experimental reproducibility.
Looking for an authentic oxytocin research peptide for sale for laboratory research? PX1 Research provides high-purity, USA-manufactured oxytocin (>98% purity verified via RP-HPLC and ESI-MS) accompanied by lot-specific certificates of analysis. Designed strictly for in vitro binding assays and preclinical receptor signaling models, our formulations undergo rigorous endotoxin testing to ensure consistent experimental reproducibility.
When acquiring an oxytocin research peptide for sale, institutional researchers and analytical laboratories require rigorous quality benchmarks to ensure experimental integrity. Oxytocin is a nonapeptide hormone and neuropeptide central to peptide receptor binding studies, signal transduction mapping, and neuromuscular cell line investigations. At PX1 Research, every batch of synthetic oxytocin is synthesized in state-of-the-art, GMP-compliant facilities within the United States, providing verified structural fidelity for specialized in vitro and preclinical research applications.
Quality control in peptide synthesis is non-negotiable. Substandard synthesis can introduce truncated sequences, residual reagents, or uncharacterized diastereomers that obscure research findings in binding affinity assays. PX1 Research mitigates these risks by subjecting every lot to dual testing protocols: Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC) to establish purity levels exceeding 98%, and Electrospray Ionization Mass Spectrometry (ESI-MS) to verify precise molecular identity. Laboratories seeking to source high-purity materials can browse our complete collection of all research peptides for complementary analytical standards.
To ensure seamless workflow integration, PX1 Research maintains centralized distribution centers in California and Arizona. Orders placed before cut-off times dispatch same-day Monday through Friday, ensuring that critical research materials arrive promptly with minimal exposure to thermal degradation during transit.
Oxytocin is a cyclic nonapeptide featuring the chemical sequence Cys-Tyr-Ile-Gln-Asn-Cys-Pro-Leu-Gly-NH2, linked by an intramolecular disulfide bridge between the cysteine residues at positions 1 and 6. This disulfide bridge forms a 20-membered ring structure essential for high-affinity binding to the oxytocin receptor (OXTR). The carboxyl-terminal tail consists of a tripeptide sequence (Pro-Leu-Gly-NH2) that stabilizes the active conformation required for downstream signal transduction.
The molecular formula of synthetic oxytocin is C43H66N12O12S2, yielding a exact molecular weight of 1007.19 g/mol. In solid form, the peptide presents as a sterile, lyophilized white powder engineered for high solubility in aqueous buffer systems. Because subtle changes in primary sequence or disulfide bond formation can dramatically alter receptor interaction kinetics, PX1 Research validates the correct cyclic conformation of every batch prior to release.
Understanding these structural parameters is essential for researchers investigating OXTR signaling pathways or mapping peptide-ligand interactions via X-ray crystallography and nuclear magnetic resonance (NMR) spectroscopy. Comprehensive technical specifications are detailed in our extensive research reference library.
Oxytocin functions primarily as a potent agonist at the oxytocin receptor (OXTR), a Class A Rhodopsin-like G-protein coupled receptor (GPCR). Binding of oxytocin to the extracellular domain of OXTR induces a conformational change that promotes coupling to the Gq/11 class of heterotrimeric G-proteins. This activation event stimulates phospholipase C-beta (PLC-β), triggering the hydrolysis of phosphatidylinositol 4,5-bisphosphate (PIP2) into two key intracellular second messengers: inositol 1,4,5-trisphosphate (IP3) and diacylglycerol (DAG).
The IP3 signaling cascade mobilizes calcium ions (Ca2+) from the lumen of the smooth endoplasmic reticulum into the cytosol. Elevated cytosolic free calcium subsequently binds to calmodulin, forming a complex that activates myosin light-chain kinase (MLCK). This enzymatic pathway drives smooth-muscle cellular contraction models in vitro. Simultaneously, DAG activates protein kinase C (PKC), initiating downstream MAP kinase (MAPK/ERK) cascades involved in cellular proliferation, differentiation, and gene expression modulation.
In addition to Gq/11 coupling, preclinical studies indicate that OXTR activation can recruit beta-arrestin proteins (specifically arrestin-2 and arrestin-3), leading to receptor desensitization, endocytosis, and alternative non-canonical signaling pathways. Researchers utilizing our oxytocin research peptide for sale can reliably isolate these distinct intracellular cascades in isolated tissue models and immortalized cell lines.
Synthetic oxytocin is widely utilized across diverse scientific disciplines, serving as a standard reference compound in receptor-ligand kinetics, neurobiology, and cellular physiology. Primary domains of preclinical investigation include:
1. Receptor-Binding & Affinity Assays: Radioligand binding assays (using tritiated or fluorophore-tagged ligands) measure the competitive displacement kinetics, dissociation constants (Kd), and half-maximal effective concentrations (EC50) of novel OXTR ligands relative to reference oxytocin.
2. Central Neuropeptide Pathways: Rodent models evaluate the role of central oxytocin receptor activation in social recognition memory, anxiety-like behavioral paradigms, and bonded interaction networks. These preclinical designs help map oxytocinergic projections from the paraventricular (PVN) and supraoptic (SON) nuclei of the hypothalamus to limbic structures like the amygdala and nucleus accumbens.
3. Smooth-Muscle Cell Models: In vitro cellular cultures and isolated tissue bath preparations (such as uterine or vascular smooth-muscle preparations) utilize oxytocin to quantify intracellular calcium transients, isometric force generation, and cross-bridge cycling rates.
4. Metabolic & Neuroendocrine Cross-Talk: Emerging in vitro data indicate potential cross-talk between central oxytocinergic circuits and peripheral metabolic signaling pathways, providing opportunities to analyze receptor co-localization and heteromerization alongside other peptide signaling systems.
When designing comparative signaling experiments, researchers frequently evaluate oxytocin alongside structural analogues or functional neuropeptides targeting GPCR pathways. Below is a comparative overview of key parameters across related research peptides:
Oxytocin: Target Receptor: OXTR (Gq/11 coupled); Primary In Vitro Focus: Smooth-muscle calcium mobilization, central social behavior pathways, binding kinetics; Structure: Cyclic nonapeptide with Cys1-Cys6 disulfide bridge.
PT-141 (Bremelanotide): Target Receptor: Melanocortin Receptors (MC3R/MC4R); Primary In Vitro Focus: Central nervous system pathways, melanocortin signaling cascades; Structure: Cyclic heptapeptide sequence.
Melanotan II: Target Receptor: Non-selective Melanocortin Receptors (MC1R, MC3R, MC4R, MC5R); Primary In Vitro Focus: Melanogenesis assays, energy homeostasis signaling; Structure: Synthetic cyclic lactam analog.
BPC-157 Peptide: Target Receptor: FAK/Src structural signaling pathways; Primary In Vitro Focus: Cellular migration, angiogenesis models, nitric oxide synthesis; Structure: Linear pentadecapeptide.
Cross-comparing these compounds allows laboratories to construct comprehensive control matrices when investigating shared intracellular signaling intermediates, such as cytosolic calcium flux or protein kinase phosphorylation cascades. Explore our catalog for high-purity reference standards across all peptide classes.
The analytical accuracy of any preclinical trial depends entirely on the chemical purity and physical consistency of the reagent. At PX1 Research, every batch of oxytocin research peptide for sale undergoes stringent quality verification prior to packaging in our ISO 17025-accredited testing facility.
Purity Verification via RP-HPLC: Reverse-Phase HPLC separates peptide species based on hydrophobic interactions. Our standard protocol utilizes a C18 stationary phase with an acetonitrile/water gradient containing 0.1% trifluoroacetic acid (TFA). Detection at 214 nm and 280 nm confirms that total chromatographic purity meets or exceeds 98%, eliminating trace truncated fragments or side-reaction byproducts.
Identity Confirmation via ESI-MS: Mass spectrometry confirms the exact molecular weight of the synthesized nonapeptide. The resultant mass spectra display clear singly and multiply charged molecular ion peaks corresponding precisely to the theoretical monoisotopic mass of 1007.19 Da.
Endotoxin Quantification: Bacterial endotoxins (lipopolysaccharides) can confound cell culture experiments by triggering non-specific inflammatory signaling via Toll-like Receptor 4 (TLR4). PX1 Research conducts Chromogenic Reagent Kinetic LAL (Limulus Amebocyte Lysate) assays to ensure endotoxin levels remain below strict institutional thresholds (<0.01 EU/µg). Every order includes a downloadable, lot-matched Certificate of Analysis (COA) for total batch transparency.
Lyophilized oxytocin must be reconstituted under sterile laboratory conditions using appropriate aseptic techniques to prevent biological contamination or structural degradation. The following guidelines are provided for laboratory handling:
1. Solvent Selection: Reconstitute lyophilized oxytocin using sterile Bacteriostatic Water (containing 0.9% benzyl alcohol) for multi-use analytical preparations, or sterile 0.9% Sodium Chloride (saline) or Phosphate-Buffered Saline (PBS, pH 7.4) for sensitive cell culture applications.
2. Reconstitution Technique: Allow the vial to reach room temperature before reconstitution. Direct the solvent stream down the inner glass wall of the vial rather than directly onto the lyophilized cake. Gently swirl the vial in a circular motion until completely dissolved. Avoid vigorous shaking or vortexing, which can introduce shear forces that disrupt the disulfide bond architecture or cause protein aggregation.
3. Concentration Parameters: Common stock concentrations for laboratory assays range from 1.0 mg/mL to 5.0 mg/mL. Stock solutions should be diluted into working assay buffers immediately prior to experimental execution.
Detailed protocol sheets and reconstitution calculations are available through our analytical peptide documentation hub.
To maintain structural stability and prevent chemical cleavage or oxidation, adherence to proper storage conditions is critical throughout the product lifecycle.
Lyophilized Form: Solid lyophilized oxytocin powder should be stored at -20°C (-4°F) or colder in a manual defrost freezer. Under these desiccation conditions, the un-reconstituted peptide remains stable for up to 24 months from the manufacturing date.
Reconstituted Liquid Form: Once dissolved in aqueous buffer, stock solutions should be divided into single-use experimental aliquots using sterile microcentrifuge tubes to prevent repeated freeze-thaw cycles. Stored at 2°C to 8°C (36°F to 46°F), reconstituted solutions remain stable for up to 14 days. For extended storage of up to 3 months, aliquots must be frozen at -80°C (-112°F).
Light & Contamination Protection: Oxytocin is sensitive to photo-oxidation, particularly across the tyrosine residue at position 2. Vials should be kept in light-protective packaging or amber containers away from direct UV exposure.
PX1 Research supports university research departments, contract research organizations (CROs), and biotechnology firms requiring consistent, large-scale supply of research compounds. We offer scalable packaging configurations ranging from individual 10mg vials to multi-gram bulk quantities.
Institutions establishing ongoing supply agreements gain access to dedicated account management, custom lot reservations, and volume-tiered pricing structures through our wholesale account portal. All orders are shipped in specialized thermal insulation with real-time tracking to maintain cold-chain security from our CA and AZ facilities directly to your laboratory bench.
Where can I find an oxytocin research peptide for sale with third-party testing?
PX1 Research provides certified oxytocin research peptides for sale manufactured in USA-based GMP facilities. Every single lot undergoes independent HPLC and MS testing to verify >98% purity and structural identity, complete with a publicly accessible Certificate of Analysis.
What is the primary role of oxytocin in preclinical research?
In preclinical research, oxytocin serves as a selective agonist at the oxytocin receptor (OXTR). It is extensively studied in receptor-binding kinetics, G-protein signaling (Gq/11 pathways), intracellular calcium mobilization, social-behavior neurocircuitry, and smooth-muscle contraction cell models.
How is purity verified for PX1 Research oxytocin lots?
Purity is verified using Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC) to measure chemical purity (>98%) and Electrospray Ionization Mass Spectrometry (ESI-MS) to confirm exact molecular mass (1007.19 g/mol).
What pathways are evaluated using oxytocin receptor agonists?
Researchers use oxytocin receptor agonists to investigate PLC-β activation, IP3-mediated cytosolic calcium release, DAG/PKC activation, MAPK/ERK phosphorylation, and beta-arrestin recruitment involved in receptor desensitization.
How should lyophilized oxytocin peptide be stored upon receipt?
Lyophilized oxytocin should be stored at -20°C or colder in a dry, dark environment. Sealed vials remain stable for up to 24 months under these storage parameters.
What reconstitution solvents are recommended for in vitro oxytocin assays?
For analytical and cellular assays, sterile bacteriostatic water, sterile 0.9% saline, or phosphate-buffered saline (PBS, pH 7.4) are recommended. Gentle swirling should be used rather than vortexing.
What is the endotoxin threshold for PX1 Research neuropeptides?
PX1 Research enforces strict endotoxin limits (<0.01 EU/µg), verified via Kinetic Chromogenic LAL testing, ensuring reagents do not induce unwanted inflammatory responses in cell culture models.
Can oxytocin research peptides be used for human or clinical applications?
No. All products sold by PX1 Research, including oxytocin, are strictly intended for laboratory research and in vitro/preclinical experimentation. They are not for human consumption, clinical use, or veterinary administration.
How does oxytocin compare to other signaling peptides like PT-141 or Melanotan II?
While oxytocin targets the Gq/11-coupled oxytocin receptor, PT-141 and Melanotan II act on central melanocortin receptors (MC3R/MC4R/MC1R). They are frequently compared in comparative neuroendocrine signaling studies.
How quickly are oxytocin research orders fulfilled and shipped?
Orders placed before standard cut-off times are dispatched the same day (Monday through Friday) directly from our distribution hubs in California and Arizona.
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.