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Quality Control

Batch: Purity: 99.91%

99.91

Related Targets	Adrenergic Receptor AChR 5-HT Receptor COX Calcium Channel Histamine Receptor Dopamine Receptor GABA Receptor TRP Channel Cholinesterase (ChE)
Other Neurokinin Receptor Inhibitors	Tradipitant L-732138 Fezolinetant Substance P Asparagus Extract Elinzanetant Maropitant citrate

Cell Culture, Treatment & Working Concentration

Cell Lines	Assay Type	Activity Description
CHO cells	Function assay	Displacement of [125I]SP from human NK1 receptor expressed in CHO cells, IC50=9e-05 μM
HEK293 cell	Function assay	Displacement of [125I]-substance P from gerbil NK1 receptor expressed in HEK293 cell membranes incubated for 30 mins by liquid scintillation counting method, IC50=9e-05 μM
HEK293 cell	Function assay	Noncompetitive inhibition of wild type human NK1 receptor expressed in HEK293 cells assessed as decrease in SP1-induced [3H]IP accumulation after 20 mins
Click to View More Cell Line Experimental Data

Solubility

In vitro
Batch:

DMSO : 107 mg/mL (200.21 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Ethanol : 15 mg/mL

Water : Insoluble

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
Mass value Mass unit	Concentration value Concentration unit	Volume value Volume unit	Molecular weight (g/mol)

Dilution Calculator Molecular Weight Calculator

In vivo batch selection In vivo Batch:
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.

In vivo Formulation Calculator (Clear solution)

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Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )

Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH₂O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such
as vortex, ultrasound or hot water bath can be used to aid dissolving.

Chemical Information, Storage & Stability

Molecular Weight	534.43	Formula	C₂₃H₂₁F₇N₄O₃	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	170729-80-3	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	MK-0869, L-754030			SMILES	CC(C1=CC(=CC(=C1)C(F)(F)F)C(F)(F)F)OC2C(N(CCO2)CC3=NNC(=O)N3)C4=CC=C(C=C4)F

Read more about storage stability stock solution CAS number SMILES

Mechanism of Action

Targets/IC₅₀/Ki	G-CSF IL-6 IL-8 TNFα Neurokinin-1 receptor (Cell-free assay) 0.1 nM
In vitro	Aprepitant antagonizes the effects of substance P by binding to NK-1 receptors primarily in the CNS, but also in the periphery. This compound, at concentrations of 0.1 nM displaces 50% of substance P from hNK1 receptors transfected in CHO or COS cells. In radioligand binding assays, it is 3000-fold selective for the human cloned NK1 receptor versus the human cloned NK3 receptor and >50,000-fold selective over the human cloned NK2 receptor. In a range of assays at other human cloned G–protein coupled receptors, this chemical retains >50,000-fold selectivity for the human cloned NK1 receptor. It is inactive in human monoamine oxidase A and B assays and at human serotonin 5–HT1A, 5–HT2A, 5–HT2c, 5–HT3, 5–HT5, 5–HT6, and 5–HT7 receptors (IC50>3 μM). In the PANLABS panel of radioligand binding screens using native animal tissues, this compound inhibits [³H]substance P binding to native NK1 receptors in rat submaxillary gland; there are no signiﬁcant interactions of it with any other native animal G–protein coupled receptors or ion channels examined in the PANLABS screen. It is inactive in monoamine uptake site (NE, 5–HT, DA) counterscreens using human and animal tissues (IC50> 3 μM)
In vivo	Aprepitant crosses the blood–brain barrier and occupied NK-1 receptors in the brain. This compound has been shown to inhibit both acute and delayed emesis induced by cytotoxic chemotherapeutic such as cisplatin by blocking substance P. It (3 mg/kg i.v. or p.o.) inhibits the emetic response to cisplatin (10 mg/kg i.v.). The anti-emetic protection afforded by this chemical (0.1 mg/kg i.v.) is enhanced by combined treatment with either dexamethasone (20 mg/kg i.v.) or the 5–HT3 receptor antagonist ondansetron (0.1 mg/kg i.v.). In a model of acute and delayed emesis, ferrets are dosed with cisplatin (5 mg/kg i.p.) and the retching and vomiting response recorded for 72 h. Pretreatment with it (4–16 mg/kg p.o.) dose-dependently inhibits the emetic response to cisplatin. Once daily treatment with this compound (2 and 4 mg/kg p.o.) completely prevents retching and vomiting in all ferrets tested. Further when daily dosing began at 24 h after cisplatin injection, when the acute phase of emesis had already become established, it (4 mg/kg p.o. at 24 and 48 h after cisplatin) prevents retching and vomiting in three out of four ferrets. This chemical also plays a key part in transmission of pain impulses from the peripheral receptors to the CNS and is involved in various behavioural, neurochemical and cardiovascular responses to stress.
References	[1] https://pubmed.ncbi.nlm.nih.gov/10728886/ [2] https://pubmed.ncbi.nlm.nih.gov/15485308/ [3] https://pubmed.ncbi.nlm.nih.gov/27230663/

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2023-05-03)

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT05841849	NOT_YET_RECRUITING	Breast Cancer; Chemotherapy-induced Nausea and Vomiting	Second Affiliated Hospital, Zhejiang University, School of Medicine	2023-07	PHASE4
NCT06740812	NOT_YET_RECRUITING	Nausea and Vomiting; Nausea; Vomiting	Montefiore Medical Center	2026-12	PHASE4
NCT07662200	NOT_YET_RECRUITING	Germ Cell Cancer	Ottawa Hospital Research Institute	2026-08	EARLY_PHASE1
NCT07639723	NOT_YET_RECRUITING	PONV	Endeavor Health	2026-07	PHASE4
NCT06462287	RECRUITING	Apnea, Obstructive	University Hospital, Rouen	2024-03-05	PHASE2
NCT07371728	NOT_YET_RECRUITING	Otologic Disease	Sir Mortimer B. Davis - Jewish General Hospital	2026-06-01	PHASE4

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Aprepitant Neurokinin Receptor antagonist

Chemical Structure

Molecular Weight: 534.43