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Apalutamide (ARN-509) AR Antagonist

Name: Apalutamide (ARN-509)
Brand: Selleck Chemicals
SKU: S2840
Availability: InStock
Rating: 5 (35 reviews)

Cat.No.S2840

Apalutamide (ARN-509) is a selective and competitive androgen receptor inhibitor with IC50 of 16 nM in a cell-free assay. This compound is useful for prostate cancer treatment and is in Phase 3.

Chemical Structure

Molecular Weight: 477.43

Jump to Mechanism of Action Cell Culture & Working Concentration Solubility Chemical Information, Storage & Stability Specificity

Quality Control

Batch: Purity: 99.98%

99.98

Related Targets	Adrenergic Receptor Estrogen/progestogen Receptor GPR Glucocorticoid Receptor ACE RAAS Opioid Receptor THR PGES Aromatase 5-alpha Reductase CCK receptor Mineralocorticoid Receptor GHSR SSTR TSH Receptor GNRH Receptor PGDS
Related Products	Galeterone EPI-001 Cyproterone Acetate 3,3'-Diindolylmethane Bavdegalutamide (ARV-110)

Cell Culture, Treatment & Working Concentration

Cell Lines	Assay Type	Concentration	Incubation Time	Activity Description	PMID
LNCAP cells	Proliferation assay		3 days	Antiproliferative activity against human LNCAP cells after 3 days, IC50=0.174 μM	26046313
PSN1 cells	Cytotoxicity assay		96 h	Cytotoxicity against human PSN1 cells after 96 hrs by ATP-lite luminescence assay, IC50=0.06 μM	22247788
PSN1 cells	Function assay	30 nM	24 h	Induction of cell cycle arrest in human PSN1 cells assessed as accumulation at G2/M phase cells at 30 nM after 24 hrs by flow cytometry	22247788
LNCaP	Function assay		30 mins	Displacement of [3H]-R1881 from AR in human LNCaP cells preincubated for 30 mins followed by [3H]-R1881 addition measured after 30 mins by microbeta scintillation counter method, IC50 = 0.01625 μM.	28478926
U-2 OS	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for U-2 OS cells	29435139
A673	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for A673 cells	29435139
DAOY	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for DAOY cells	29435139
BT-37	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for BT-37 cells	29435139
RD	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for RD cells	29435139
SK-N-SH	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SK-N-SH cells	29435139
BT-12	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for BT-12 cells	29435139
MG 63 (6-TG R)	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for MG 63 (6-TG R) cells	29435139
NB1643	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for NB1643 cells	29435139
Fibroblast cells	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for control Hh wild type fibroblast cells	29435139
Rh41	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Rh41 cells	29435139
Rh30	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Rh30 cells	29435139
SJ-GBM2	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SJ-GBM2 cells	29435139
SK-N-MC	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SK-N-MC cells	29435139
NB-EBc1	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for NB-EBc1 cells	29435139
LAN-5	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for LAN-5 cells	29435139
Rh18	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Rh18 cells	29435139
Click to View More Cell Line Experimental Data

Chemical Information, Storage & Stability

Molecular Weight	477.43	Formula	C₂₁H₁₅F₄N₅O₂S	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	956104-40-8	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	N/A			Smiles	CNC(=O)C1=C(C=C(C=C1)N2C(=S)N(C(=O)C23CCC3)C4=CC(=C(N=C4)C#N)C(F)(F)F)F

Solubility

In vitro
Batch:

DMSO : 95 mg/mL ( (198.98 mM) Moisture-absorbing DMSO reduces solubility. Please use fresh DMSO.)

Ethanol : 7 mg/mL

Water : Insoluble

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
=	×	×

Dilution Calculator Molecular Weight Calculator

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.
Clear solution	2%DMSO 1 40%PEG300 2 2%Tween80 3 56%ddH2O Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	3.000mg/ml (6.28mM)	Taking the 1 mL working solution as an example, add 20 μL of 150 mg/ml clarified DMSO stock solution to 400 μL of PEG300, mix evenly to clarify it; add 20 μL of Tween80 to the above system, mix evenly to clarify; then continue to add 560 μL of ddH2O to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results.
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)

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)

Dosage: mg/kg Average weight of animals: g Dosing volume per animal:μL Number of animals:

Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)

% DMSO + % + % Tween 80 + % ddH₂O

%DMSO+ %

Calculation results:

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.

Mechanism of Action

Targets/IC₅₀/Ki	Androgen Receptor ^[1] (Cell-free assay) 16 nM
In vitro	Apalutamide (ARN-509) (< 10 μM) inhibits androgen-mediated induction or repression of mRNA expression levels for 13 endogenous genes including PSA and TMPRSS2 in the LNCaP/AR prostate cancer cell line. It also inhibits the proliferative effect of R1881 (30 pM) in the same cell line. At 10 μM, this compound impairs AR nuclear localization and thus reduces the concentration of AR available to bind androgen response elements (ARE) in LNCaP cells expressing AR-EYFP. It is able to effectively compete with R1881 (1 nM) and prevent AR from binding to promoter regions. Additionally, it inhibits R1881-induced VP16-AR–mediated transcription with IC50 of 0.2 μM in Hep-G2 cells expressing a VP16-AR fusion protein and an ARE-driven luciferase reporter. ^[1]
In vivo	Apalutamide (ARN-509) (10 mg/kg/d, oral) inhibits tumor growth with decreased proliferative index and increased apoptotic rate in castrate male immunodeficient mice harboring LNCaP/AR-luc xenograft tumors. This compound dose dependently inhibits tumor growth with highest efficacy at dose of 30 mg/kg/day in castrate male immunodeficient mice harboring LNCaP/AR-luc xenograft tumors. It dosed at 10 mg/kg/d for 28 days results in a 3-fold reduction in prostates weight associated with lacking glandular secretory activity and 1.7-fold reduction in epididymis weight in adult male dogs. The compound (10 mg/kg/d, oral) inhibits cell proliferation of prostate tissues in adult male dogs. ^[1] It is safe and well tolerated in 24 patients with metastatic CRPC who has progressed on prior treatments and peak plasma concentrations occurred 2 to 3 hours after administration. This agent results in durable PSA declines at doses ranging from 30 to 300 mg in patients with metastatic CRPC. ^[2] It shows powerful anti-cancer activity and induces durable remissions long after therapy completion in castrate resistant prostate cancer mouse models. ^[3]
References	https://pubmed.ncbi.nlm.nih.gov/22266222/ http://www.asco.org/ASCOv2/Meetings/Abstracts?&vmview=abst_detail_view&confID=116&abstractID=89154 http://www.pcf.org/atf/cf/%7B7C77D6A2-5859-4D60-AF47-132FD0F85892%7D/PCFStateScience2010.pdf

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