High-purity reference standards are essential for conducting reproducible in vitro and preclinical investigations into neuroendocrine signalling and receptor kinetics. PX1 Research supplies analytical-grade oxytocin acetate 2mg vials engineered specifically for qualified academic, biotechnology, and institutional research laboratories. Every lot undergoes rigorous third-party verification to ensure structural sequence identity, ultra-high purity, and low endotoxin levels.
High-purity reference standards are essential for conducting reproducible in vitro and preclinical investigations into neuroendocrine signalling and receptor kinetics. PX1 Research supplies analytical-grade oxytocin acetate 2mg vials engineered specifically for qualified academic, biotechnology, and institutional research laboratories. Every lot undergoes rigorous third-party verification to ensure structural sequence identity, ultra-high purity, and low endotoxin levels.
Qualified research facilities seeking oxytocin acetate 2mg for sale require chemical reagents that conform to strict analytical standards. Oxytocin acetate (CAS 50-56-6 free base) provided by PX1 Research is synthesized in USA-based, GMP-compliant facilities and tested by independent ISO 17025 accredited laboratories to guarantee batch-to-batch consistency and sequence verification.
When purchasing high-purity research peptides, research teams must verify that reagents are free of sequence truncations, residual TFA salts, and microbial contamination. PX1 Research addresses these laboratory requirements by providing comprehensive analytical documentation—including Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC) chromatograms and Mass Spectrometry (MS) spectra—with every order of oxytocin acetate 2mg.
Oxytocin is a endogenous cyclic nonapeptide hormone featuring a crucial intramolecular disulfide bridge between cysteine residues at positions 1 and 6. Its primary amino acid sequence is Cys-Tyr-Ile-Gln-Asn-Cys-Pro-Leu-Gly-NH2 (CYIQNCPLG-NH2), with a molecular formula of C43H66N12O12S2 and a theoretical molecular weight of 1007.19 g/mol. The acetate salt form enhances peptide solubility and stability during lyophilization and laboratory reconstitution.
The molecular architecture of oxytocin acetate is characterized by a six-amino-acid ring structure terminated by a three-amino-acid carboxyl-terminal tail. In vitro structural analyses indicate that the disulfide bond between Cys1 and Cys6 imposes a rigid conformational constraint necessary for high-affinity binding to the oxytocin receptor (OXTR). Modifications to either the cyclic ring or the C-terminal tripeptide tail typically result in a significant loss of receptor activation or altered ligand affinity, making pure reference material vital for structural biology studies.
Oxytocin acts as a selective agonist at the oxytocin receptor (OXTR), a Class A rhodopsin-like G-protein coupled receptor (GPCR). Preclinical studies suggest that ligand binding to OXTR induces a conformational transition that promotes coupling to the Gαq/11 class of heterotrimeric G proteins. This activation sequence stimulates phospholipase C-beta (PLC-β), driving the hydrolysis of phosphatidylinositol 4,5-bisphosphate (PIP2) into inositol 1,4,5-trisphosphate (IP3) and diacylglycerol (DAG).
The generated IP3 binds to ligand-gated calcium channels on the sarcoplasmic/endoplasmic reticulum, triggering a rapid efflux of intracellular calcium ([Ca2+]i). Concurrently, DAG activates protein kinase C (PKC), initiating downstream phosphorylation cascades that modulate gene expression, cellular proliferation, and smooth muscle excitation-contraction coupling. In vitro assays demonstrate that OXTR can also couple to Gαi/o pathways under specific ligand concentrations, inhibiting adenylyl cyclase activity and modulating intracellular cyclic AMP (cAMP) levels.
In neurobiological research, oxytocin acetate is extensively evaluated within animal models to map central neuroendocrine circuits. Rodent models utilizing intracerebroventricular (ICV) or localized microinfusion techniques indicate that oxytocin receptor activation within the paraventricular nucleus (PVN), supraoptic nucleus (SON), amygdala, and nucleus accumbens plays a primary role in mediating social recognition, pair bonding, pair-group cohesion, and stress response modulation.
Preclinical data indicate that central oxytocin signalling dampens hypothalamic-pituitary-adrenal (HPA) axis reactivity by suppressing corticotropin-releasing hormone (CRH) synthesis and systemic corticosterone release. Research published in behavioral neuroscience literature highlights that targeting central OXTR pathways can alter social interaction paradigms in wild-type and genetic knock-out rodent strains, offering valuable insight into the neurochemical architecture of social cognition.
Beyond central nervous system mapping, oxytocin receptor agonists are critical tools in peripheral smooth-muscle research. Myometrial and mammary myoepithelial cell lines are routinely employed in vitro to quantify binding affinity (Kd), receptor density (Bmax), and intracellular signal transduction kinetics. In these cell models, oxytocin-induced calcium mobilization triggers calmodulin-dependent activation of myosin light chain kinase (MLCK), culminating in cross-bridge cycling and cell contraction.
Cellular assays also utilize oxytocin acetate to study receptor desensitization and trafficking mechanisms. Continuous or high-concentration agonist exposure in cell cultures leads to rapid phosphorylation of the OXTR by G-protein coupled receptor kinases (GRKs), followed by beta-arrestin recruitment, receptor endocytosis, and subsequent lysosomal degradation or recycling to the plasma membrane. Understanding these desensitization profiles is fundamental for researchers modeling long-term receptor dynamics.
When designing comparative pharmacological assays, researchers frequently contrast oxytocin acetate with structurally related neurohypophyseal peptides. The nonapeptide arginine vasopressin differs from oxytocin by only two amino acids (Phe3 for Ile3, and Arg8 for Leu8), yet exhibits primary affinity for V1a, V1b, and V2 receptors while maintaining cross-reactivity at the oxytocin receptor.
To evaluate structural stability and receptor selectivity across different molecular frameworks, investigators compare oxytocin with synthetic analogs in empirical models. For instance, carbetocin acetate 2mg is a long-acting enzymatic-resistant analog featuring a thioether bridge instead of a disulfide bond, while synthetic vasopressin derivatives like arg-vasopressin are evaluated alongside oxytocin to map signal crossover between OXTR and AVPR subtypes. Further details regarding cross-selectivity can be found in our comprehensive guide on vasopressin analogues.
To guarantee valid experimental outcomes, laboratory reagents must adhere to strict chemical purity baselines. PX1 Research enforces a rigorous quality control framework across all catalog products. Every lot of oxytocin acetate is subjected to Reverse-Phase HPLC to verify chemical purity exceeding 99.0%, ensuring the complete absence of truncated peptide fragments, oxidation products, or synthetic side-products.
Mass Spectrometry (ESI-MS or MALDI-TOF) is conducted concurrently to confirm the exact molecular weight and sequence integrity against theoretical benchmarks. Furthermore, because bacterial endotoxins can contaminate cell cultures and artifactually activate Toll-like receptors (TLRs), PX1 Research subjects all peptide lots to Limulus Amebocyte Lysate (LAL) assay testing. This guarantees ultra-low endotoxin thresholds (<0.01 EU/mg), making our compounds suitable for sensitive primary cell cultures and in vitro receptor assays. Researchers can access detailed analytical documentation via our published COA directory.
Proper reconstitution and storage procedures are critical to maintain the structural integrity of lyophilized oxytocin acetate. Upon arrival, the sealed vial should be stored in a freezer at -20°C or -80°C protected from light. Prior to reconstitution, allow the vial to equilibrate to room temperature inside a desiccator or sealed container to minimize moisture condensation on the lyophilized cake.
For laboratory preparation, reconstitute the lyophilized powder using sterile bacteriostatic water, sterile normal saline (0.9% NaCl), or cell-culture grade phosphate-buffered saline (PBS, pH 7.4). Swirl the vial gently to dissolve the peptide; aggressive vortexing or sonicating should be avoided as mechanical shear forces can induce peptide aggregation or disulfide bond disruption. Once reconstituted, stock solutions should be aliquoted into single-use polypropylene microcentrifuge tubes and stored at -80°C to prevent degradation from repeated freeze-thaw cycles.
PX1 Research serves as a trusted supply partner for university research groups, contract research organizations (CROs), and private biotechnology institutions. All reagents ship directly from our state-of-the-art facilities located in California and Arizona, with same-day order processing for weekday purchases. This reliable supply chain ensures that sensitive research timelines are maintained without disruption.
For enterprise research programs requiring bulk quantities, custom vial fill sizes, or standardized single-lot production runs for multi-year studies, PX1 Research provides specialized procurement options. Scientific directors and procurement officers can establish institutional purchasing arrangements through our wholesale laboratory portal to obtain dedicated batch reserving and volume pricing scale options.
What is the purity level of PX1 Research oxytocin acetate 2mg?
Every batch of oxytocin acetate 2mg supplied by PX1 Research is verified via RP-HPLC to achieve a chemical purity of >99.0%. Complete lot-specific Certificates of Analysis (COAs) including mass spec and HPLC chromatograms are available for download.
What molecular targets does oxytocin acetate bind to?
Oxytocin acetate acts primarily as a high-affinity agonist at the G-protein coupled oxytocin receptor (OXTR). In high concentrations, preclinical assays show it may also exhibit low-affinity binding at vasopressin V1a and V2 receptor subtypes.
How should lyophilized oxytocin acetate 2mg be stored upon delivery?
Dry lyophilized oxytocin acetate should be stored at -20°C or -80°C in a desiccated environment away from light. Under these conditions, the un-reconstituted peptide remains stable for up to 24 months.
What solvent is recommended for reconstituting oxytocin acetate in a lab setting?
For in vitro cellular assays and laboratory research, sterile bacteriostatic water, sterile normal saline (0.9%), or phosphate-buffered saline (PBS, pH 7.4) are commonly utilized solvents depending on experimental assay constraints.
What is the endotoxin limit for PX1 Research oxytocin acetate?
PX1 Research subjects every production batch to LAL endotoxin testing. Our standard threshold for laboratory research peptides is kept exceptionally low (<0.01 EU/mg) to prevent cellular interference during sensitive assays.
Can oxytocin acetate be used for human administration or clinical therapy?
No. Oxytocin acetate provided by PX1 Research is strictly sold as a laboratory research chemical for in vitro assays and non-human preclinical study. It is not for human, veterinary, or clinical use.
Where are PX1 Research peptides synthesized and shipped from?
All PX1 Research compounds are synthesized in USA-based, GMP-compliant facilities and shipped directly from distribution hubs in California and Arizona with same-day shipping on orders placed Monday through Friday.
How does oxytocin compare to carbetocin in stability assays?
Carbetocin is a synthetic analog of oxytocin featuring a modified peptide backbone (a thioether bridge replacing the disulfide bond and a modified Tyr residue). In structural studies, carbetocin demonstrates increased resistance to enzymatic cleavage compared to native oxytocin acetate.
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.