5-HT₁ Receptor Antagonist

Volinanserin is a potent and selective antagonist of 5-HT₂ receptor, with a K_i of 0.36 nM, and shows 300-fold selectivity for 5-HT₂ receptor over 5-HT_1c, alpha-1 and DA D₂ receptors. Volinanserin has antipsychotic activity.

WAY-100635 is a potent and selective 5-HT_1A Receptor antagonist with a pIC₅₀ of 8.87, an apparent pA₂ of 9.71. WAY-100635 is a potent and selective 5-hydroxytryptamine 1A (5-HT1A) receptor antagonist with an IC₅₀ value of 0.91 nM and K_i value of 0.39 nM. WAY-100635 has pIC₅₀ values for 5-HT1A and α1-adrenergic receptors of 8.9 and 6.6, respectively. WAY-100635 is also a potent dopamine D₄ receptor agonist.

Pindolol (LB-46) is the antagonist for 5-HT 1A (K_i=33 nM) and 5-HT 1B. Pindolol is the antagonist for β1/β2-adrenergic receptor. Pindolol exhibits anti-anxiety and antidepressant effects.

GR 113808 is a potent and highly selective 5-HT₄ receptor antagonist (pK_b= 8.8). GR 113808 shows 300-fold selectivity over 5-HT_1A, 5-HT_1B, 5-HT_2A, 5-HT_2C and 5-HT₃ receptors.

Ziprasidone (CP-88059), an orally active antipsychotic agent, is a combined 5-HT and dopamine receptor antagonist. Ziprasidone mesylate trihydrate has affinities for Rat D₂ (K_i=4.8 nM), 5-HT_2A (K_i=0.42 nM) and 5-HT_1A (K_i=3.4 nM).

Spiperone (Spiroperidol) is a potent dopamine D2, serotonin 5-HT_1A, and serotonin 5-HT_2A antagonist. Spiperone is also a labelled ligand for neuroleptic receptors. Spiperone enhances intracellular calcium level and inhibits the Wnt signaling pathway. Spiperone has the potential for the research of neurology diseases.

Alprenolol ((RS)-Alprenolol; dl-Alprenolol) is an orally active non-selective β-adrenoceptor antagonist and an antagonist of 5-HT1A and 5-HT1B receptors. Alprenolol is used as an anti-hypertensive, anti-anginal and anti-arrhythmic agent.

Methiothepin (Metitepine) mesylate is a potent and non-selective 5-HT₂ receptor antagonist, with pK_ds of 7.10 (5-HT_1A), 7.28 (5HT_1B), 7.56 (5HT_1C), 6.99 (5HT_1D), 7.0 (5-HT_5A), 7.8 (5-HT_5B), 8.74 (5-HT₆), and 8.99 (5-HT₇), and pK_is of 8.50 (5HT_2A), 8.68 (5HT_2B), and 8.35 (5HT_2C).

Asenapine (Org 5222) maleate, a brain-penetrant atypical antipsychotic, is an antagonist of serotonin receptors (pK_i: 8.4-10.5), adrenoceptors (pK_i: 8.9-9.5), dopamine receptors (pK_i: 8.9-9.4) and histamine receptors (pK_i: 8.2-9.0). Asenapine maleate can be used in the research of schizophrenia and bipolar disorder.

Rotundine is an antagonist of dopamine D1, D2 and D3 receptors with IC₅₀s of 166 nM, 1.4 μM and 3.3 μM, respectively. Rotundine is also an antagonist of 5-HT_1A with an IC₅₀ of 370 nM.

SB-224289 hydrochloride is a selective 5-HT1B receptor antagonist, with anxiolytic effect.

Alprenolol ((RS)-Alprenolol; dl-Alprenolol) hydrochloride is an orally active non-selective β-adrenoceptor antagonist and an antagonist of 5-HT1A and 5-HT1B receptors. Alprenolol hydrochloride is used as an anti-hypertensive, anti-anginal and anti-arrhythmic agent.

Trimipramine maleate is a 5-HT receptor antagonist, with blood-brain barrier permeability. Trimipramine maleate has pK_i binding values of 6.39, 8.10, 4.66 for 5-HT_1C, 5-HT₂ and 5-HT_1A, respectively. Trimipramine maleate is also a potent and selective inhibitor targeting human noradrenaline (hNAT), serotonin (hSERT) and organic cation transporters (hOCT1, hOCT2) with IC₅₀ values of 4.99 μM, 2.11 μM, 3.72 μM, 8.00 μM, respectively. Trimipramine maleate has vascular activity and anxiolytic efficacy.

SB-277011 hydrochloride (SB-277011A hydrochloride) is a potent, selective, orally bioavailable and brain penetrate dopamine D₃ receptor (D₃R) antagonist with K_i values of 10.7 nM and 11.2 nM at rodent and human D₃R, respectively. SB-277011 hydrochloride displays 80- to 100-fold selectivity over other dopamine receptors with pK_is of 8.0, 6.0, <5.2, and 5.9 for D3, D2, 5-HT_1B, and 5-HT_1D receptors, respectively.

GR127935 hydrochloride is a selective and orally active 5-HT_1D and 5-HT_1B receptor antagonist with pK_i values of 8.5 for both receptors. GR127935 hydrochloride impairs memory acquisition and Serotonin (HY-B1473A)-mediated vasodilation. GR127935 hydrochloride can be used for research on amnesia, neuroendocrine cancer, and migraine.

NAN-190 hydrobromide is a serotonin receptor 5-HT antagonist. NAN-190 is a selective antagonist of 5-HT_1A.

Arotinolol is a nonselective α/β-adrenergic receptor blocker and a vasodilating β-blocker. Arotinolol also shows potency for inhibiting the binding of the radioligand ¹²⁵I-ICYP to 5HT_1B-serotonergic receptor sites. Arotinolol is an antihypertensive agent for the treatment of a variety of cardiovascular pathologies as well as non-cardiovascular diseases.

Ziprasidone (CP-88059) hydrochloride monohydrate is an orally active combined 5-HT and dopamine receptor antagonist. Ziprasidone hydrochloride monohydrate has affinities for Rat D₂ (K_i=4.8 nM), 5-HT_2A (K_i=0.42 nM) and 5-HT_1A (K_i=3.4 nM).

Alverine citrate is a 5-HT_1A receptor antagonist, with an IC₅₀ of 101 nM.

Ziprasidone (CP-88059) hydrochloride is an orally active combined 5-HT and dopamine receptor antagonist. Ziprasidone hydrochloride has affinities for Rat D₂ (K_i=4.8 nM), 5-HT_2A (K_i=0.42 nM) and 5-HT_1A (K_i=3.4 nM).