Aprepitant (MK-0869) is a selective and high-affinity neurokinin 1 receptor antagonist with a Kd of 86 pM.
CS-003 Free base (CS-003), a triple tachykinin receptor antagonist, shows high affinities for human (Neurokinin) NK1, NK2 and NK3 receptors with Ki values of 2.3 nM, 0.54 nM and 0.74 nM, respectively. CS-003 Free base (CS-003) has therapeutic efficacy on respiratory diseases associated with neurokinins.
Fosaprepitant dimeglumine(MK-0517) is a neurokinin-1 receptor antagonist for the prevention of chemotherapy-induced nausea and vomiting.IC50 Value:Target: NK1 receptorin vitro: Fosaprepitant (also known as MK-0517 and L-758,298) is a water-soluble phosphoryl prodrug for aprepitant, which, when administered intravenously, is converted to aprepitant within 30 min of intravenous administration via the action of ubiquitous phosphatases. Owing to the rapid conversion offosaprepitant to the active form (aprepitant), fosaprepitant 115 mg provided the same aprepitant exposure in terms of AUC as aprepitant 12 mg orally, and fosaprepitant is expected to provide a correspondingly similar antiemetic effect as aprepitant [1]. in vivo: Fosaprepitant is well tolerated with mild to moderate venous irritation being the only additional toxicity to those seen with oral aprepitant, and that is a function of dose, concentration, and infusion rate [2]. Patients receiving cisplatin ≥ 70 mg/m(2) for the first time received ondansetron and dexamethasone with a standard aprepitant regimen (125 mg on day 1, 80 mg on day 2, 80 mg on day 3) or a single-dose fosaprepitant regimen (150 mg on day 1) [3]. Single-dose fosaprepitant used in combination with granisetron and dexamethasone was well-tolerated and effective in preventing chemotherapy-induced nausea and vomiting in patients receiving highly emetogenic cancer chemotherapy, including high-dose cisplatin [4].
Casopitant mesylate (GW679769B) is a potent, selective, brain permeable and orally active neurokinin 1 (NK1) receptor antagonist. Casopitant mesylate is a second in the class of antiemetics that acts to antagonise the emetogenic effect of substance P. Casopitant mesylate is also a substrate and a weak-to-moderate inhibitor of CYP3A4. Casopitant mesylate can be used for chemotherapy-induced nausea and vomiting (CINV) and postoperative nausea and vomiting (PONV)[1][2].
Benzomalvin B is the less active analogs of Benzomalvin A. Benzomalvin B is weakly active against substance P[1].
[D-Trp2,7,9] Substance P is a tachykinin (Neurokinin Receptor) antagonist with Ki values of 1 μM, 1.3 μM, and ~9 μM for NK-1, NK-2,and NK-3 receptor, respectively[1].
NK1 receptor antagonist 2 is a NK1 receptor antagonist. NK1 receptor antagonist 2 can be used for the research of tinnitus and hearing loss[1].
SSR-241586 is an antagonist of neurokinin receptors. SSR-241586 is shown to be active in the treatment of depression, schizophrenia, urinary trouble, emesis, and irritable bowel syndrome (IBS)[1][2].
[Glp5,(Me)Phe8,Sar9] Substance P (5-11) (DiMe-C7) is a Substance P (HY-P0201) analogue that has approximately the same effects as Substance P (HY-P0201) on neurokinin 1 receptor (NK1R) in rat brain, but with a much longer duration of action. [Glp5,(Me)Phe8,Sar9] Substance P (5-11) selectively activates dopamine metabolism in the mesencephalon and midbrain cortex of the rat brain. [Glp5,(Me)Phe8,Sar9] Substance P (5-11) also increases motor activity and induces recovery of cocaine-seeking behavior in rats[1][2][3].
Fosnetupitant (Pronetupitant) a methylene phosphate prodrug of Netupitant. Fosnetupitant (Pronetupitant) exhibits a pKi of 9.5 for human NK1 receptor[1].
L-732138 is a selective, potent and competitive neurokinin-1 (NK-1) receptor antagonist with an IC50 of 2.3 nM. L-732138 has 200-fold more potent in cloned human NK-1 receptors than cloned rat NK-1 receptors, and has > 1000-fold more potent than human NK-2 and NK-3 receptors. L-732138 can reduce hyperalgesia and has antitumor action[1][2].
MEN 15596 is a potent and selective tachykinin NK2 receptor antagonist with a pKi of 10.1.
NK-1 Antagonist 1 is an antagonist of NK-1 receptor, used in the research of NK-1 related diseases and conditions such as cough, overactive bladder, alcohol dependency and depression.
[Glp6] Substance P (6-11) is an analogue of substance P (6-11). Substance P (6-11) stimulates [3H]-inositol monophosphate ([3H]-IP1) formation in rat urinary bladder by acting on the 'septide-sensitive' tachykinin receptors[1][2].
H-Glu(OtBu)-OtBu hydrochloride is a glutamate derivative that can be used for substance P antagonist synthesis[1].
FK888 is a potent, selective, and high affinity dipeptide NK1 receptor antagonist. FK888 displaces [3H]-SP binding with a Ki value of 0.69 nM and 0.45 microM. FK888 also inhibits SP-induced airway oedema in guinea-pig after both intravenous and oral administration[1].
Neurokinin A (4-10) is a tachykinin NK2 receptor agonist.
Rolapitant (SCH619734) is a potent, selective and orally active neurokinin NK1 receptor antagonist with a Ki of 0.66 nM.
MLGFFQQPKPR-NH2 is a reversed Substance P peptide. Substance P is a neuropeptide[1].
Talnetant (SB 223412) is a potent and selective NK3 receptor antagonist (ki=1.4 nM, hNK-3-CHO); 100-fold selective for the hNK-3 versus hNK-2 receptor, with no affinity for the hNK-1 at concentrations up to 100 uM.IC50 Value: 1.4 nM (hNK-3-CHO binding Ki) [1]Target: NK3 receptorin vitro: In vitro studies demonstrated that 53 is a potent functional antagonist of the hNK-3 receptor (reversal of senktide-induced contractions in rabbit isolated iris sphincter muscles and reversal of NKB-induced Ca2+ mobilization in CHO cells stably expressing the hNK-3 receptor), while in vivo this compound showed oral and intravenous activity in NK-3 receptor-driven models (senktide-induced behavioral responses in mice and senktide-induced miosis in rabbits) [1]. Talnetant has high affinity for recombinant human NK3 receptors (pKi 8.7) and demonstrates selectivity over other neurokinin receptors (pKi NK2 = 6.6 and NK1<4). In native tissue-binding studies, talnetant displayed high affinity for the guinea pig NK3 receptor (pKi 8.5) [3].in vivo: Rectal barostat tests were performed on 102 healthy volunteers, randomized to receive either oral talnetant 25 or 100 mg or placebo over 14-17 days [2]. Talnetant (3-30 mg/kg i.p.) significantly attenuated senktide-induced 'wet dog shake' behaviors in the guinea pig in a dose-dependent manner. Microdialysis studies demonstrated that acute administration of talnetant (30 mg/kg i.p.) produced significant increases in extracellular dopamine and norepinephrine in the medial prefrontal cortex and attenuated haloperidol-induced increases in nucleus accumbens dopamine levels in the freely moving guinea pigs [3].Toxicity: Talnetant had no effect on rectal compliance, sensory thresholds or intensity ratings compared with placebo [2].Clinical trial: Study Of Talnetant Versus Placebo And Risperidone In Schizophrenia. Phase 2
Hemokinin 1 (mouse) is a selective agonist of neurokinin-1 receptor, with Ki of 0.175 nM and 560 nM for human NK1 receptor and human NK2 receptor, respectively.
Senktide is a tachykinin NK3 receptor agonist.
Serlopitant is a selective Neurokinin-1 (NK-1) receptor antagonist.
γ-Neuropeptide (rabbit) can be isolated from rabbit intestine. γ-Neuropeptide is an endogenous neurokinin peptide that acts as a neurokinin 2 (NK2) receptor agonist. γ-Neuropeptide mediates hypothalamic-pituitary-adrenal (HPA) axis, as well as reproductive hormone release[1][2][3].
Nolpitantium (SR140333) is a potent, selective, competitive, non-peptide tachykinin NK1 receptor antagonist. Nolpitantium blocks the activation of rat thalamic neurons after nociceptive stimulation[1].
[Lys5,MeLeu9,Nle10]-NKA(4-10) is a highly selective and potent NK2 receptor agonist, with an IC50 of 6.1 nM[1].