2. Signaling Pathways
  3. GPCR/G Protein
  4. Oxytocin Receptor

Oxytocin Receptor

OXTR

Oxytocin Receptor

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The oxytocin receptor belongs to the G-protein-coupled seven-transmembrane receptor superfamily. Its main physiological role is regulating the contraction of uterine smooth muscle at parturition and the ejection of milk from the lactating breast. The oxytocin receptors are activated in response to binding oxytocin and a similar nonapeptide, vasopressin. Oxytocin receptor triggers Gi or Gq protein-mediated signaling cascades leading to the regulation of a variety of neuroendocrine and cognitive functions.

Oxytocin is a nonapeptide of the neurohypophyseal protein family that binds specifically to the oxytocin receptor to produce a multitude of central and peripheral physiological responses. In vivo, oxytocin acts as a paracrine and/or autocrine mediator of multiple biological effects. These effects are exerted primarily through interactions with G-protein-coupled oxytocin/vasopressin receptors, which, via Gq and Gi, stimulate phospholipase C-mediated hydrolysis of phosphoinositides.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-17571
    Oxytocin
    		Agonist 99.87%
    Oxytocin (α-Hypophamine; Oxytocic hormone) is a pleiotropic, hypothalamic peptide known for facilitating parturition, lactation, and prosocial behaviors. Oxytocin can function as a stress-coping molecule with anti-inflammatory, antioxidant, and protective effects especially in the face of adversity or trauma.
    Oxytocin
  • HY-108677
    L-368,899 hydrochloride
    		Antagonist 99.97%
    L-368,899 hydrochloride is a potent, selective, orally bioavailable, non-peptide oxytocin receptor antagonist, with IC50s of 8.9 nM and 26 nM for rat uterus and human uterus oxytocin receptor, respectively. L-368,899 hydrochloride used as a tocolytic agent.
    L-368,899 hydrochloride
  • HY-17571A
    Oxytocin acetate
    		Agonist 99.62%
    Oxytocin (α-Hypophamine) acetate is a pleiotropic, hypothalamic peptide known for facilitating parturition, lactation, and prosocial behaviors. Oxytocin acetate can function as a stress-coping molecule with anti-inflammatory, antioxidant, and protective effects especially in the face of adversity or trauma.
    Oxytocin acetate
  • HY-17572
    Atosiban
    		Antagonist 99.44%
    Atosiban (RW22164; RWJ22164) is a nonapeptide competitive vasopressin/oxytocin receptor antagonist, and is a desamino-oxytocin analogue. Atosiban is the main tocolytic agent and has the potential for spontaneous preterm labor research.
    Atosiban
  • HY-17573
    Carbetocin
    		Agonist 99.97%
    Carbetocin, an oxytocin (OT) analogue, is an oxytocin receptor agonist with a Ki of 7.1 nM. Carbetocin has high affinity to chimeric N-terminus (E1) of the oxytocin receptor (Ki=1.17 μM). Carbetocin has the potential for postpartum hemorrhage research. Carbetocin can crosse the blood-brain barrier and produces antidepressant-like activity via activation of oxytocin receptors in the CNS.
    Carbetocin
  • HY-16741
    Erlosiban
    		Antagonist
    Erlosiban (OBE001) is an orally active non-peptide type oxytocin receptor antagonist. Erlosiban inhibits the increase of intracellular calcium concentration, thereby reducing uterine smooth muscle contraction. Erlosiban can be used for research on premature birth and to improve embryo implantation and pregnancy rate in assisted reproductive technology (AR).
    Erlosiban
  • HY-129791
    L-367773
    		Antagonist
    L-367773 is an orally active, selective oxytocin receptor antagonist, with Ki values of 26 nM and 61 nM for rat uterine oxytocin receptor and human uterine oxytocin receptor, respectively. L-367773 inhibits Oxytocin-stimulated uterine contractions.
    L-367773
  • HY-17571S
    Oxytocin-13C6,15N TFA
    Oxytocin-13C6,15N (α-Hypophamine-13C6,15N) TFA is the 13C- and 15N-labeled Oxytocin TFA. Oxytocin (α-Hypophamine; Oxytocic hormone) is a pleiotropic, hypothalamic peptide known for facilitating parturition, lactation, and prosocial behaviors. Oxytocin can function as a stress-coping molecule with anti-inflammatory, antioxidant, and protective effects especially in the face of adversity or trauma.
    Oxytocin-<sup>13</sup>C<sub>6</sub>,<sup>15</sup>N TFA
  • HY-124733A
    LIT-001
    		Agonist 99.91%
    LIT-001 is the first nonpeptide oxytocin receptor (OT-R) agonist (EC50=55 nM; Ki=226 nM). LIT-001 improves social interaction in a mouse model of autism.
    LIT-001
  • HY-P3467
    (Thr4,Gly7)-Oxytocin
    		Agonist 99.89%
    (Thr4,Gly7)-Oxytocin, an Oxytocin analogue, is a specific OT receptor agonist. (Thr4,Gly7)-Oxytocin also excites subicular neurons via activation of TRPV1 channels, and depression of K+ channels. .
    (Thr4,Gly7)-Oxytocin
  • HY-15023
    Cligosiban
    		Antagonist 99.95%
    Cligosiban (PF-3274167) is an orally active, highly selective, and centrally permeable oxytocin receptor antagonist with good pharmacokinetics in rats and can inhibit physiological ejaculation in rodents[1][2].
    Cligosiban
  • HY-17572A
    Atosiban acetate
    		Antagonist 99.76%
    Atosiban acetate (RW22164 acetate;RWJ22164 acetate) is a nonapeptide competitive vasopressin/oxytocin receptor antagonist, and is a desamino-oxytocin analogue. Atosiban is the main tocolytic agent and has the potential for spontaneous preterm labor research.
    Atosiban acetate
  • HY-17573A
    Carbetocin acetate
    		Agonist 99.56%
    Carbetocin acetate, an oxytocin (OT) analogue, is an oxytocin receptor agonist with a Ki of 7.1 nM. Carbetocin acetate has high affinity to chimeric N-terminus (E1) of the oxytocin receptor (Ki=1.17 μM). Carbetocin acetate has the potential for postpartum hemorrhage research. Carbetocin acetate can crosse the blood-brain barrier and produces antidepressant-like activity via activation of oxytocin receptors in the CNS.
    Carbetocin acetate
  • HY-15010
    L-371,257
    		Antagonist 99.34%
    L-371,257 is an orally bioavailable, non-blood-brain barrier penetrant, selective and competitive antagonist of oxytocin receptor (pA2=8.4) with high affinity at both the oxytocin receptor (Ki=19 nM) and vasopressin V1a receptor (Ki=3.7 nM).
    L-371,257
  • HY-14778
    Retosiban
    		Antagonist 98.95%
    Retosiban (GSK221149A) is a potent, selective, and orally active oxytocin receptor antagonist (Ki (hOT) = 0.65 nM, Ki (rOT) = 4.1 nM) with no detectable agonist activity. Retosiban has nanomolar affinity for the oxytocin receptor with >1400-fold selectivity over the closely related vasopressin receptors. Retosiban inhibits spontaneous and induces uterine contractions. Retosiban can be studied in research for preterm labour.
    Retosiban
  • HY-P0004
    Lysipressin
    		Activator 99.22%
    Lysipressin (Lysine vasopressin) is antidiuretic hormone that have been found in pigs. Lysipressin activates Oxytocin receptors and adenylate-cyclase. Lysipressin adjusts blood pressure and heart rate. Lysipressin shows antinociceptive activity.
    Lysipressin
  • HY-W587861
    5β-Dihydroprogesterone
    		Antagonist 99.94%
    5β-Dihydroprogesterone (5βDHP) is the metabolite of Progesterone (HY-N0437). 5β-Dihydroprogesterone binds to oxytocin receptor, reduces the Oxytocin (HY-17571)-induced calcium signal transduction, thereby exhibiting the tocolytic activity.
    5β-Dihydroprogesterone
  • HY-128351
    SHR1653
    		Antagonist 99.58%
    SHR1653 is a highly potent, selective and brain penetrated oxytocin receptor (OTR) antagonist, with an IC50 of 15 nM for hOTR.
    SHR1653
  • HY-17571F
    Biotin-Oxytocin
    		99.95%
    Biotin-Oxytocin (Biotin-α-Hypophamine; Biotin-Oxytocic hormone) is a biological active peptide. (This is Oxytocin (HY-17571) N-terminally labeled with Biotin.)
    Biotin-Oxytocin
  • HY-153963
    PF-06655075
    		Agonist 99.24%
    PF-06655075 is a novel andnon–brain-penetrant oxytocin receptor agonist with increased selectivity for the oxytocin receptor and significantly increased pharmacokinetic stability. PF-06655075 can be used as a tool compound to further explore the role of peripheral oxytocin in behavioral response.
    PF-06655075
Cat. No. Product Name / Synonyms Application Reactivity