All research products on this site, including all peptides, are sold strictly for laboratory and research use only, not for human or animal consumption, diagnostic, or therapeutic use. Our tallow skincare products are topical cosmetics. You must be 21 or older to enter.
By entering you confirm you are 21+ and accept these products are for research use only. See our Terms and Disclaimer.
For laboratory research. Sold in 10mg and 100mg kit sizes.
Complete the order
Supplies and compounds researchers add to this order
Identity, purity and handling data for this compound, in one place. Tap an identifier to copy it.
A third-party certificate for Oxytocin is not published here yet. If your work needs one, ask us before ordering and we will tell you what testing is available for the current lot.
Ask about a certificateFor research use only. Not for human consumption.
Oxytocin is a nonapeptide neurohormone synthesized in the paraventricular and supraoptic nuclei of the hypothalamus and released from the posterior pituitary. Its amino acid sequence (Cys-Tyr-Ile-Gln-Asn-Cys-Pro-Leu-Gly-NH2, with a disulfide bridge between positions 1 and 6) has been conserved across mammals, and it was the first peptide hormone to be sequenced and synthesized, a milestone accomplished by Vincent du Vigneaud in 1953.
In laboratory research, oxytocin is studied across a remarkably broad range of physiological systems. Originally characterized for its roles in uterine contraction and lactation, subsequent decades of research have revealed extensive oxytocin receptor (OXTR) expression in the brain, heart, immune cells, and peripheral organs. This widespread distribution has driven investigation into oxytocin's roles in social behavior neuroscience, stress axis regulation, pain modulation, cardiovascular physiology, and immune function.
The synthetic form of oxytocin is chemically identical to the endogenous nonapeptide and is widely used as a research tool compound and pharmacological reference standard. Its well-characterized receptor pharmacology, available OXTR knockout mouse lines, and established behavioral assay paradigms make it one of the most widely studied neuropeptides in biomedical research.
The areas where this compound appears in the published research literature.
Behavioral neuroscience studies employ standardized paradigms such as the three-chamber social approach test, resident-intruder assay, and partner preference tests in rodents to quantify social behavior outcomes. Researchers pair these behavioral measures with in vivo microdialysis to sample oxytocin release in specific brain regions (nucleus accumbens, amygdala) during social interactions, correlating peptide dynamics with behavioral outputs.
Electrophysiological approaches use whole-cell patch-clamp recordings in brain slice preparations from oxytocinergic nuclei or OXTR-expressing target regions. Researchers characterize how exogenous oxytocin application modifies neuronal excitability, inhibitory/excitatory balance, and synaptic transmission in circuits relevant to stress and social behavior.
Cardiovascular studies employ isolated perfused heart preparations (Langendorff model) and anesthetized rodent preparations with direct hemodynamic monitoring to examine oxytocin's acute cardiovascular effects. Molecular analysis of OXTR expression, downstream signaling (PLC-IP3-calcium, PKC, eNOS activation), and ANP release are combined with physiological endpoints to characterize the cardiac oxytocin system at the mechanistic level.
Lyophilized oxytocin should be stored at -20°C in a sealed container, protected from light and moisture. The disulfide bond is stable under dry, cold conditions, and the lyophilized peptide maintains integrity for extended periods under proper storage.
Reconstituted oxytocin solutions should be stored at 4°C and used within 24 to 48 hours. Since oxytocin contains a disulfide bridge, researchers should avoid reducing conditions (e.g., DTT or beta-mercaptoethanol) in reconstitution buffers, as these will cleave the bridge and inactivate the peptide. Neutral pH aqueous buffers are standard for research use.
Oxytocin for sale from Optimum ReGen Peptides, a US research-peptide company with a storefront in Medford, Oregon. It is in stock, priced from $50. Every order ships 2-Day Priority Air, a $13 flat rate anywhere in the US, with tracking, or can be picked up at the store.
Oxytocin is supplied as lyophilized powder, for laboratory and research use only, not for human consumption.
