Rezvilutamide (SHR3680) is an androgen receptor blocker (antagonist). Rezvilutamide (SHR3680) may be used in prostate cancer research.Rezvilutamide is an orally bioavailable androgen receptor (AR) antagonist with potential antineoplastic activity. Upon administration, rezvilutamide competitively binds to AR in target tissues, which both prevents androgen-induced receptor activation and facilitates the formation of inactive complexes that cannot be translocated to the nucleus. This prevents binding to and transcription of AR-responsive genes, inhibits the expression of genes that regulate prostate cancer cell proliferation, and may lead to an inhibition of cell growth of AR-expressing tumor cells. ARs are overexpressed in prostate cancer and play a key role in prostate cancer cell proliferation.

Physicochemical Properties

Molecular Formula	C22H20F3N3O4S
Molecular Weight	479.4721
Exact Mass	479.11266
Elemental Analysis	C, 55.11; H, 4.20; F, 11.89; N, 8.76; O, 13.35; S, 6.69
CAS #	1572045-62-5
PubChem CID	89995232
Appearance	White to off-white solid powder
LogP	2.9
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	9
Rotatable Bond Count	6
Heavy Atom Count	33
Complexity	792
Defined Atom Stereocenter Count	1
SMILES	S=C1N(C2C([H])=C([H])C(C#N)=C(C(F)(F)F)C=2[H])C(C(C([H])([H])[H])(C([H])([H])[H])N1C1C([H])=C([H])C(=C([H])C=1[H])OC([H])([H])[C@]([H])(C([H])([H])O[H])O[H])=O
InChi Key	KRBMOYIWQCZVHA-INIZCTEOSA-N
InChi Code	InChI=1S/C22H20F3N3O4S/c1-21(2)19(31)27(15-4-3-13(10-26)18(9-15)22(23,24)25)20(33)28(21)14-5-7-17(8-6-14)32-12-16(30)11-29/h3-9,16,29-30H,11-12H2,1-2H3/t16-/m0/s1 Computed by InChI 1.0.6 (PubChem release 2021.05.07)
Chemical Name	4-[3-[4-[(2S)-2,3-dihydroxypropoxy]phenyl]-4,4-dimethyl-5-oxo-2-sulfanylideneimidazolidin-1-yl]-2-(trifluoromethyl)benzonitrile
Synonyms	Rezvilutamide; 1572045-62-5; Rezvilutamide [INN]; UNII-70FJN2AW22; 70FJN2AW22; SHR3680; 4-(3-(4-((S)-2,3-Dihydroxypropoxy)phenyl)-4,4-dimethyl-5-oxo-2-thioxoimidazolidin-1-yl)-2-(trifluoromethyl)benzonitrile; 4-[3-[4-[(2S)-2,3-dihydroxypropoxy]phenyl]-4,4-dimethyl-5-oxo-2-sulfanylideneimidazolidin-1-yl]-2-(trifluoromethyl)benzonitrile;
HS Tariff Code	2934.99.9001
Storage	Powder-20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month
Shipping Condition	Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)

Biological Activity

Targets	AR/androgen receptor
ln Vitro	Rezvilutamide, a novel androgen-receptor inhibitor with low blood-brain barrier penetration, has shown potent antitumour activity against metastatic castration-resistant prostate cancer. In this study, we aimed to evaluate the efficacy and safety of rezvilutamide versus bicalutamide in combination with androgen-deprivation therapy (ADT) for high-volume, metastatic, hormone-sensitive prostate cancer.Lancet Oncol. 2022 Oct;23(10):1249-1260. Rezvilutamide is an orally bioavailable androgen receptor (AR) antagonist with potential antineoplastic activity. Upon administration, rezvilutamide competitively binds to AR in target tissues, which both prevents androgen-induced receptor activation and facilitates the formation of inactive complexes that cannot be translocated to the nucleus. This prevents binding to and transcription of AR-responsive genes, inhibits the expression of genes that regulate prostate cancer cell proliferation, and may lead to an inhibition of cell growth of AR-expressing tumor cells. ARs are overexpressed in prostate cancer and play a key role in prostate cancer cell proliferation.
ln Vivo	Between June 28, 2018, and Aug 6, 2020, 792 patients were screened and 654 patients were randomly assigned to receive rezvilutamide plus ADT (n=326) or bicalutamide plus ADT (n=328). At the preplanned interim analysis for radiographic progression-free survival (data cutoff May 16, 2021), the median follow-up duration was 21·2 months (IQR 16·6-25·8). Rezvilutamide significantly improved radiographic progression-free survival compared with bicalutamide (median radiographic progression-free survival not reached [95% CI not reached-not reached] vs 25·1 months [95% CI 15·7-not reached]; hazard ratio [HR] 0·44 [95% CI 0·33-0·58]; p<0·0001). At the preplanned interim analysis for overall survival (data cutoff Feb 28, 2022), the median follow-up duration was 29·3 months (IQR 21·0-33·3). Rezvilutamide significantly improved overall survival compared with bicalutamide (HR 0·58 [95% CI 0·44-0·77]; p=0·0001; median overall survival was not reached [95% CI not reached-not reached] vs not reached [36·2-not reached]). The most common grade 3 or worse adverse events of any cause in the safety population were hypertension (26 [8%] of 323 patients in the rezvilutamide group vs 24 [7%] of 324 patients in the bicalutamide group), hypertriglyceridaemia (24 [7%] vs seven [2%]), increased weight (20 [6%] vs 12 [4%]), anaemia (12 [4%] vs 16 [5%]), and hypokalaemia (11 [3%] vs four [1%]). Serious adverse events were reported in 90 (28%) of 323 patients in the rezvilutamide group and 69 (21%) of 324 patients in the bicalutamide group. No treatment-related deaths occurred in patients in the rezvilutamide group; one treatment-related death of unknown specific cause (<1%) occurred in the bicalutamide group. Interpretation: In the two interim analyses, rezvilutamide plus ADT significantly improved radiographic progression-free survival and overall survival compared with bicalutamide plus ADT in patients with high-volume, metastatic, hormone-sensitive prostate cancer, with a tolerable safety profile.Lancet Oncol. 2022 Oct;23(10):1249-1260.
Animal Protocol	CHART is a randomised, open-label, phase 3 study done at 72 hospitals in China, Poland, Czech Republic, and Bulgaria. Eligible patients were aged 18 years or older, had an Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1, and had high-volume metastatic, hormone-sensitive prostate cancer. Previous chemotherapy or other localised treatment for prostate cancer were not allowed. Patients were randomly assigned (1:1) to receive ADT plus either rezvilutamide (240 mg) or bicalutamide (50 mg) orally once daily. Randomisation was done via an interactive response technology system (block size of four) and stratified according to ECOG performance status and presence of visceral metastasis (excluding lymph nodes). Herein, we present the results of the preplanned interim analyses for the two co-primary endpoints of radiographic progression-free survival assessed by a blinded independent review committee and overall survival in the intention-to-treat population. Safety was assessed in all patients who received at least one dose of study medication. This study is ongoing, but is closed to recruitment. This trial is registered with ClinicalTrials.gov, NCT03520478.Lancet Oncol. 2022 Oct;23(10):1249-1260.
References	[1]. New drugs in prostate cancer. Prostate International Volume 4, Issue 2, June 2016, Pages 37-42. [2]. Molecular Mechanisms Related to Hormone Inhibition Resistance in Prostate Cancer. Cells. 2019 Jan 11;8(1):43.
Additional Infomation	Rezvilutamide is an orally bioavailable androgen receptor (AR) antagonist with potential antineoplastic activity. Upon administration, rezvilutamide competitively binds to AR in target tissues, which both prevents androgen-induced receptor activation and facilitates the formation of inactive complexes that cannot be translocated to the nucleus. This prevents binding to and transcription of AR-responsive genes, inhibits the expression of genes that regulate prostate cancer cell proliferation, and may lead to an inhibition of cell growth of AR-expressing tumor cells. ARs are overexpressed in prostate cancer and play a key role in prostate cancer cell proliferation.

Solubility Data

Solubility (In Vitro)

DMSO: 100 mg/mL (208.56 mM)

Solubility (In Vivo)

Solubility in Formulation 1: ≥ 2.5 mg/mL (5.21 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL. Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution. Solubility in Formulation 2: ≥ 2.5 mg/mL (5.21 mM) (saturation unknown) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly. Preparation of 20% SBE-β-CD in Saline (4°C，1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution. Solubility in Formulation 3: ≥ 2.5 mg/mL (5.21 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly.  (Please use freshly prepared in vivo formulations for optimal results.)

Preparing Stock Solutions		1 mg	5 mg	10 mg
	1 mM	2.0856 mL	10.4282 mL	20.8564 mL
	5 mM	0.4171 mL	2.0856 mL	4.1713 mL
	10 mM	0.2086 mL	1.0428 mL	2.0856 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.