Human Follicular Gonadotropin Releasing Peptide (hF-GRP) is a hormonal peptide that, in vitro, can induce the secretion of pituitary luteinizing hormone (LH) and follicle-stimulating hormone (FSH) [1] [2].

Lecirelin acetate is a synthetic GnRH (gonadotropin releasing hormone) analogue which shows a great efficacy in the treatment of bovine ovarian follicular cysts.

Kisspeptin 234 acetate(1145998-81-7 free base) is a Kisspeptin receptor (KISS1, GPR54) antagonist; a Kisspeptin-10 analogue. It inhibits the stimulation of inositol phosphate (IP) (IC50 = 7 nM) and the release of gonadotropin-releasing hormone (GnRH) by kisspeptin-10.

Deslorelin acetate(57773-65-6 free base) is a gonadotropin releasing hormone super-agonist (GnRH agonist)

Buserelin Acetate (57982-77-1 free base) (Buserelin Acetate) is an agonist of gonadotropin-releasing hormone receptor(GnRHR).

Degarelix acetate is a competitive and reversible antagonist of gonadotropin-releasing hormone receptor (GnRHR) .

Kisspeptin-54 is a peptide ligand of the orphan G protein-coupled receptor GPR54 (Kis = 1.81 and 1.45 nM for rat and human receptors, respectively).1 It is a 54 amino acid peptide encoded by the metastasis suppressor gene KISS-1. Kisspeptin-54 induces calcium mobilization in CHO-K1 cells expressing rat and human receptors (EC50s = 1.39 and 5.47 nM, respectively). It also induces arachidonic acid release in CHO cells expressing rat and human GPR54 in a concentration-dependent manner. Kisspeptin-54 (10-1,000 nM) inhibits insulin secretion from isolated mouse pancreatic β-cells in the presence of 2.8 mM, but not 11.1 mM, glucose.2 Kisspeptin-54 (1-5 nmol, i.c.v.) increases serum levels of luteinizing hormone (LH) and follicular stimulating hormone (FSH) in mice, an effect which is reversed by the gonadotropin releasing hormone (GNRH) antagonist acycline.3References1. Kotani, M., Detheux, M., Vandenbogaerde, A.L., et al. The metastasis suppressor gene KiSS-1 encodes kisspeptins, the natural ligands of the orphan G protein-coupled receptor GPR54. J. Biol. Chem. 276(37), 34631-34636 (2001).2. Vikman, J., and Ahrén, B. Inhibitory effect of kisspeptins on insulin secretion from isolated mouse islets. Diabetes Obes. Metab. 11(Suppl 4), 197-201 (2009).3. Gottsch, M.L., Cunningham, M.J., Smith, J.T., et al. A role for kisspeptins in the regulation of gonadotropin secretion in the mouse. Endocrinology 145(9), 4073-4077 (2004). Kisspeptin-54 is a peptide ligand of the orphan G protein-coupled receptor GPR54 (Kis = 1.81 and 1.45 nM for rat and human receptors, respectively).1 It is a 54 amino acid peptide encoded by the metastasis suppressor gene KISS-1. Kisspeptin-54 induces calcium mobilization in CHO-K1 cells expressing rat and human receptors (EC50s = 1.39 and 5.47 nM, respectively). It also induces arachidonic acid release in CHO cells expressing rat and human GPR54 in a concentration-dependent manner. Kisspeptin-54 (10-1,000 nM) inhibits insulin secretion from isolated mouse pancreatic β-cells in the presence of 2.8 mM, but not 11.1 mM, glucose.2 Kisspeptin-54 (1-5 nmol, i.c.v.) increases serum levels of luteinizing hormone (LH) and follicular stimulating hormone (FSH) in mice, an effect which is reversed by the gonadotropin releasing hormone (GNRH) antagonist acycline.3 References1. Kotani, M., Detheux, M., Vandenbogaerde, A.L., et al. The metastasis suppressor gene KiSS-1 encodes kisspeptins, the natural ligands of the orphan G protein-coupled receptor GPR54. J. Biol. Chem. 276(37), 34631-34636 (2001).2. Vikman, J., and Ahrén, B. Inhibitory effect of kisspeptins on insulin secretion from isolated mouse islets. Diabetes Obes. Metab. 11(Suppl 4), 197-201 (2009).3. Gottsch, M.L., Cunningham, M.J., Smith, J.T., et al. A role for kisspeptins in the regulation of gonadotropin secretion in the mouse. Endocrinology 145(9), 4073-4077 (2004).

Neurokinin B (NKB) belongs in the family of tachykinin peptides. Neurokinin B is implicated in a variety of human functions and pathways such as the secretion of gonadotropin-releasing hormone.

Phoenixin-14 TFA (PNX-14) is a blood-brain barrier (BBB)-penetrable neuropeptide with anxiolytic, cardioprotective, and neuroprotective properties. It modulates pituitary gonadotrophin release by enhancing gonadotropin-releasing hormone (GnRH) receptor mRNA expression and promotes insulin secretion. Additionally, PNX-14 TFA offers protection against ischemia/reperfusion (IR) injury in mice and combats oxidative stress by diminishing reactive oxygen species (ROS) and elevating glutathione (GSH) levels [1] [2] [3].

Agonist of the NPFF1 receptor (IC50 = 0.7 nM for inhibition of forskolin-induced cAMP production). Homolog of gonadotropin-inhibitory hormone (GnIH); inhibits activity of gonadotropin-releasing hormone (GnRH) neurons.

Abarelix (PPI 149) is a potent gonadotrophin-releasing hormone (GnRH) antagonist, which is used for prostate cancer treatment.

Histrelin acetate is a nonapeptide analog of gonadotropin-releasing hormone (GnRH) with added potency. It acts on particular cells of the pituitary gland called gonadotropes when present in the bloodstream. Histrelin stimulates these cells to release luteinizing hormone and follicle-stimulating hormone. Thus it is considered a gonadotropin-releasing hormone agonist or GnRH agonist.

Degarelix is a competitive and reversible gonadotropin-releasing hormone receptor (GnRHR) antagonist.

Goserelin acetate (Fertilan) is a synthetic long-acting agonist of gonadotropin-releasing hormone, used in treatments of cancer.

LH-RH II (chicken), a structural variant of mammalian luteinizing hormone-releasing hormone (LHRH) found in the hypothalamus of the domestic hen, exists as one of two forms of LHRH that enhance gonadotropin release in domestic chickens [1] [2].

Lamprey LH-RH I, a gonadotropin-releasing hormone, effectively increases plasma steroid levels and induces ovulation in lampreys, yet demonstrates no biological activity in other animal models [1].

Lecirelin is a synthetic GnRH (gonadotropin releasing hormone) analogue which shows a great efficacy in the treatment of bovine ovarian follicular cysts.

Fertirelin, or fertirelin acetate, sold under the brand name Ovalyse, is a gonadotropin-releasing hormone agonist (GnRH agonist).

Zoptarelin doxorubicin, also known as AEZS-108, is an LHRH agonist. Zoptarelin doxorubicin is a peptide agonist of the gonadotropin releasing hormone-1 receptor (GnRH-1R) that is conjugated to the anthracycline antibiotic doxorubicin with potential antineoplastic activity. Zoptarelin doxorubicin binds to GnRH-1Rs, which may be highly expressed on endometrial and ovarian tumor cell membrane surfaces, and is internalized. Once inside the cell, the doxorubicin moiety of this agent intercalates into DNA and inhibits the topoisomerase II activity, which may result in the inhibition of tumor cell DNA replication and tumor cell proliferation

TAK-683 TFA, a potent full KISS1 receptor (KISS1R) agonist with a half-maximal inhibitory concentration (IC50) of 170 pM, exhibits enhanced metabolic stability. As a nonapeptide metastin analog, it demonstrates agonistic activities towards KISS1R, with effective concentration (EC50) values of 0.96 nM for humans and 1.6 nM for rats. In vivo, TAK-683 TFA reduces gonadotropin-releasing hormone (GnRH) levels in the hypothalamus and decreases plasma follicle-stimulating hormone (FSH), luteinizing hormone (LH), and testosterone levels. Given these effects, TAK-683 TFA holds promise for research into hormone-dependent prostate cancer.

Des-Gly10,D-Ala6,Pro-NHEt9)-LHRH (salmon), a gonadotropin-releasing hormone (GnRH) analog, effectively induces ovulation and/or spawning in farmed fish [1].

Alarelin Acetate is a synthetic GnRH agonist which can directly inhibit proliferation and DNA synthesis of rat GSMC through GnRH receptors.

[MePhe7]-Neurokinin B is a neurokinin NK-3 receptor (NK3R) agonist, exhibiting a potent agonistic activity with an IC50 value of 3 nM. It acts as a potential regulator of pulsatile gonadotropin-releasing hormone (GnRH) secretion through the activation of NK3R [1].

Gonadotropin-Releasing Hormone-Associated Peptide (GAP) (1-24), human, also known as hGAP-1-24, is the 1-24 fragment of the human GAP, which is connected to the luteinizing hormone-releasing hormone (LH-RH) through a 3 amino acid processing site [1].

sGnRH-A, a salmon gonadotropin-releasing hormone (GnRH) analogue, promotes growth hormone secretion and serves as an ovulation inducer for artificial insemination [1] [2].

[D-Glp1,D-Phe2,D-Trp3,6]-LH-RH, a luteinizing hormone-releasing hormone (LHRH) analogue, functions as a gonadotropin-releasing hormone (GnRH) receptor antagonist [1].

Acyline is a novel GnRH antagonist found in animal studies to be a potent suppressor of circulating gonadotropin and testosterone (T) levels. Acyline inhibits basal and GnRH-stimulated serum testosterone concentrations in male dogs. Acyline prevented ovulation, but did not affect ovarian follicular development or gestational corpora lutea in the domestic cat. A single dose of the potent gonadotropin-releasing hormone antagonist acyline suppresses gonadotropins and testosterone for 2 weeks in healthy young men.

Cetrorelix diacetate (NS-75A) is is a gonadotropin-releasing hormone antagonist. It works by blocking the action of GnRH upon the pituitary, thus rapidly suppressing the production and action of luteinizing hormone (LH) and follicle-stimulating hormone (FSH).

Ganirelix Acetate is a gonadotropin-releasing hormone (GnRH) receptor antagonist

sGnRH-A acetate, a salmon gonadotropin-releasing hormone (GnRH) analogue, stimulates growth hormone secretion and serves as an ovulation inducer for artificial insemination [1] [2].

Acyline TFA, a gonadotropin-releasing hormone (GnRH) peptide analogue, functions as a GnRH antagonist, effectively suppressing gonadotropin and testosterone (T) levels [1].

Gonadotropin-Releasing Hormone-Associated Peptide (GAP) (25-53), Human, also known as hGAP-25-53, is a fragment of the human gonadotropin-releasing hormone-associated peptide that serves as an immunogen for producing antiseras such as MC-1, MC-2, and MC-3. This peptide is connected to the luteinizing hormone-releasing hormone (LH-RH) sequence through a 3 amino acid processing site [1].

Ganirelix is a selective and competitive antagonist of gonadotropin-releasing hormone (GnRH), effectively preventing endogenous GnRH from triggering the release of luteinizing hormone (LH) and follicle-stimulating hormone [1].