Access verified lot-specific Certificate of Analysis (COA) data for Oxytocin research compounds. PX1 Research provides comprehensive analytical documentation—including Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC) chromatograms and Electrospray Ionization Mass Spectrometry (ESI-MS) spectra—to ensure rigorous quality standards for in vitro and preclinical investigation.
Access verified lot-specific Certificate of Analysis (COA) data for Oxytocin research compounds. PX1 Research provides comprehensive analytical documentation—including Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC) chromatograms and Electrospray Ionization Mass Spectrometry (ESI-MS) spectra—to ensure rigorous quality standards for in vitro and preclinical investigation.
An authentic Oxytocin COA confirms the structural identity, chemical purity, and bio-burden limits of a given nonapeptide lot prior to laboratory experimentation. To meet analytical standards, a complete certificate must feature lot-matched Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC) peak integration data showing ≥98% purity, alongside Electrospray Ionization Mass Spectrometry (ESI-MS) validating the target molecular mass of 1007.19 Da. Furthermore, quantitative Chromogenic Limulus Amebocyte Lysate (LAL) testing must confirm low endotoxin thresholds.
Evaluating a lot-specific Oxytocin COA is a fundamental step in experimental design. In synthetic peptide production, trace contaminants such as deletion sequences, truncated fragments, and unmasked side-chain protective groups can interfere with receptor-binding assays and cellular signaling cascades. PX1 Research publishes independent, third-party laboratory verification for every lot manufactured, ensuring full transparency and reproducibility across all research peptides.
Analytical RP-HPLC is the gold standard method for determining the chromatographic purity of synthetic peptides. When examining an oxytocin coa hplc trace, researchers should evaluate the main target peak against baseline noise and minor secondary peaks. The area under the curve (AUC) calculation of the primary oxytocin elution peak must exceed 98.0% total integration to ensure minimal interference from diastereomers or synthetic byproducts.
The chromatographic separation of oxytocin requires optimized stationary and mobile phases, typically utilizing a C18 silica column with a gradient of acetonitrile containing 0.1% trifluoroacetic acid (TFA). Because oxytocin contains a intramolecular disulfide bridge between Cys1 and Cys6, precise retention time monitoring on an oxytocin coa hplc report confirms proper oxidative folding. Any secondary peaks eluting near the target compound indicate potential disulfide scrambling or peptide oxidation, both of which are cataloged and controlled under PX1's ISO 17025 analytical protocols.
While RP-HPLC quantifies chromatographic purity, Electrospray Ionization Mass Spectrometry (ESI-MS) confirms the exact molecular identity of the synthesized sequence. The theoretical monoisotopic mass of oxytocin (C43H66N12O12S2) is 1007.19 Da. A compliant mass spectrum shows a dominant protonated molecular ion peak ([M+H]+ at m/z ~1008.2) or sodium adducts matching theoretical predictions, eliminating the possibility of sequence substitutions.
Endotoxin testing represents another critical quality metric documented on the COA. Endotoxins—lipopolysaccharides (LPS) derived from Gram-negative bacterial outer membranes—can trigger nonspecific inflammatory cascades in cellular assays and smooth-muscle tissue preparations. PX1 Research subjects every batch to chromogenic LAL assays, verifying endotoxin levels remain below strictly defined laboratory limits (<0.5 EU/mg). Investigators can review these parameters in our detailed research documentation hub.
Oxytocin is a cyclic nonapeptide (CYIQNCPLG-NH2) linked by a single disulfide bond between the cysteine residues at positions 1 and 6. Operating primarily as an oxytocin-receptor peptide agonist, the molecule targets the oxytocin receptor (OXTR), a Class A Rhodopsin-like G protein-coupled receptor (GPCR). Preclinical studies suggest that agonist binding activates the Gq/11 signaling pathway, stimulating phospholipase C-beta (PLC-β), which leads to inositol trisphosphate (IP3) generation and intracellular calcium mobilization.
In vitro models demonstrate that OXTR activation initiates downstream phosphorylation cascades involving protein kinase C (PKC) and mitogen-activated protein kinases (MAPK/ERK). Research teams utilize high-purity oxytocin to evaluate receptor-binding kinetics, receptor desensitization mechanisms, and signal transduction pathways in smooth-muscle cell lines, neuroendocrine tissue models, and central nervous system brain slice assays targeting social-behavior neural circuits. Maintaining lot-to-lot purity via verified wholesale peptide supplies ensures consistent receptor affinity without confounding variables.
When designing comparative receptor selectivity assays, researchers frequently benchmark oxytocin against structural analogs and related neurohypophyseal peptides. Key comparative compounds include arginine vasopressin, carbetocin, and demoxytocin. While oxytocin selectively targets OXTR, arginine vasopressin exhibits high affinity for V1a, V1b, and V2 receptors, differing by only two amino acids (Phe3 and Arg8 vs. Ile3 and Leu8 in oxytocin).
Carbetocin, a synthetic oxytocin analog featuring a thioether bridge instead of a disulfide bond, offers enhanced enzymatic stability against aminopeptidases in preclinical cell assays. Comparing COA metrics across these compounds—specifically HPLC retention profiles and mass spectral fragmentation patterns—allows researchers to verify sequence fidelity when conducting parallel receptor-binding studies. Accessing analytical data across these nonapeptide standards ensures targeted pharmacological profiling in vitro.
PX1 Research maintains a rigorous quality control structure designed specifically to meet the stringent demands of modern academic, biotechnology, and institutional laboratories. All research peptides are synthesized in state-of-the-art, GMP-compliant facilities situated within the United States. Production protocols strictly adhere to automated solid-phase peptide synthesis (SPPS) methodologies, followed by multi-step chromatographic purification.
Independent verification of every lot is conducted through accredited ISO 17025 testing laboratories. PX1 provides fully accessible COAs featuring unedited, raw RP-HPLC chromatograms and mass spectra rather than summary tables. Orders originate from our strategic fulfillment centers in California and Arizona, ensuring fast dispatch with same-day shipping for orders placed Monday through Friday prior to cut-off times.
Lyophilized oxytocin appears as a dense, white, sterile-filtered powder. Reconstitution should be performed under a laminar flow hood using sterile, endotoxin-free solvents such as Bacteriostatic Water (0.9% benzyl alcohol) or Sterile 0.9% Sodium Chloride for injection-grade laboratory reagent preparation. For assays sensitive to preservatives, sterile Phosphate-Buffered Saline (PBS, pH 7.4) or sterile water for injection (WFI) is recommended.
To reconstitute, slowly inject the chosen diluent down the glass vial wall to prevent excessive foaming and shear stress on the peptide backbone. Gently swirl the vial until complete dissolution is achieved; never vortex lyophilisates. Typical laboratory stock concentration ranges from 1.0 mg/mL to 5.0 mg/mL. Once dissolved, aliquot the stock solution into sterile microcentrifuge tubes to prevent degradation caused by repeated freeze-thaw cycles during ongoing laboratory experimentation.
Lyophilized oxytocin demonstrates high chemical stability when stored under proper environmental controls. For long-term preservation, unopened vials containing the dry peptide cake should be maintained at -20°C or -80°C in a desiccated environment protected from direct light exposure. Under these conditions, the compound retains specified purity parameters for up to 24 months.
Following reconstitution, aqueous oxytocin solutions are susceptible to hydrolysis, disulfide exchange, and oxidation over time. Reconstituted aliquots stored at 2°C to 8°C should be utilized within 7 to 14 days. If extended storage of reconstituted material is necessary, store aliquots at -80°C to minimize enzymatic degradation. Researchers should consult the lot-specific oxytocin coa lookup portal to cross-reference initial purity metrics before conducting sensitive quantitative assays.
What information is included on an official oxytocin coa?
An official oxytocin coa provides lot-specific analytical data including product name, CAS number, molecular formula, theoretical vs. actual mass determined by ESI-MS, chromatographic purity calculated via RP-HPLC AUC integration, physical appearance, solubility, and quantitative endotoxin testing limits (LAL assay).
How do I interpret the oxytocin coa hplc chromatogram?
The oxytocin coa hplc report shows a trace graph of UV absorbance versus retention time. The primary peak represents pure oxytocin peptide. Purity is calculated by dividing the area under the main oxytocin peak by the total area of all integrated peaks, which must equal or exceed 98.0%.
What mass spectrometry peak should appear on the oxytocin COA?
Because the theoretical molecular weight of oxytocin is 1007.19 Da, the mass spectrum should display a primary single-charged molecular ion peak ([M+H]+) at approximately m/z 1008.2. Sodium adducts ([M+Na]+) at m/z 1030.2 may also be observed.
What are the acceptable endotoxin limits for PX1 oxytocin research lots?
PX1 Research enforces strict endotoxin thresholds verified by chromogenic LAL assays. Every research lot is certified to contain <0.5 EU/mg of endotoxin, minimizing background inflammatory responses in cell culture and preclinical assays.
Where are PX1 oxytocin research peptides manufactured and shipped from?
PX1 research compounds are manufactured in GMP-compliant facilities within the USA. Orders are fulfilled directly from our dual distribution centers located in California and Arizona, featuring same-day shipping for orders processed Monday through Friday.
How should lyophilized oxytocin be stored upon arrival at the laboratory?
Lyophilized oxytocin should be stored in a freezer at -20°C or -80°C immediately upon receipt. Keep the vial sealed with desiccant to protect the cake from moisture and light.
Which diluents are suitable for oxytocin reconstitution in vitro?
Common laboratory diluents include sterile bacteriostatic water, sterile 0.9% saline, or sterile PBS (pH 7.4). Solvents should be selected based on the specific requirements of the downstream cellular or binding assay.
Why is third-party ISO 17025 testing critical for research peptides?
Third-party ISO 17025 testing guarantees unbiased verification of purity, identity, and sequence correct weight. Independent testing prevents baseline errors caused by impurities or mislabeled reagents in quantitative assays.
Can oxytocin be subjected to multiple freeze-thaw cycles?
Repeated freeze-thaw cycles accelerate peptide hydrolysis and structural degradation. Reconstituted stock solutions should be divided into single-use micro-aliquots prior to freezing at -80°C.
What receptor pathways are primarily evaluated using oxytocin research compounds?
Oxytocin is used in preclinical models to examine oxytocin receptor (OXTR) activation, Gq/11 signaling, intracellular calcium mobilization, MAPK/ERK activation pathways, and smooth-muscle tissue responsiveness.
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.