Catalog No.S1202 Synonyms: GI198745, GG-745

For research use only.

Dutasteride (GI198745, GG-745) is a dual 5-α reductase inhibitor that inhibits conversion of testosterone to dihydrotestosterone (DHT).

Dutasteride Chemical Structure

CAS No. 164656-23-9

Selleck's Dutasteride has been cited by 7 Publications

Purity & Quality Control

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Biological Activity

Description Dutasteride (GI198745, GG-745) is a dual 5-α reductase inhibitor that inhibits conversion of testosterone to dihydrotestosterone (DHT).
5-α reductase [1]
In vitro

Dutasteride inhibits type-1 5AR and type-2 5AR with IC50 of 6 nM and 7 nM, respectively. Dutasteride is 60-fold more potent than Finasteride in its initial Ki versus type 1 5AR and ~5-fold more rapid in inactivating the enzyme. [1] Dutasteride inhibits (3)H-T conversion to (3)H-DHT and, as anticipated, inhibits T-induced secretion of PSA and proliferation in LNCaP cells. Dutasteride also inhibits DHT-induced PSA secretion and cell proliferation with IC50 of 1 μM in LNCaP cells. Dutasteride competes for binding the LNCaP cell AR with an IC50 of 1.5 μM. Dutasteride (10–50 μM) results in enhanced cell death, possibly by apoptosis, in steroid-free medium. [2] Dutasteride reduces cell viability and cell proliferation in androgen-responsive (LNCaP) and androgen-unresponsive (DU145) human prostate cancer(PCa) cell lines. Dutasteride results in overexpressed genes included genes encoding for proteins involved in biosynthesis and metabolism of androgen (HSD17B1;HSD17B3;CYP11B2), androgen receptor and androgen receptor co-regulators (AR;CCND1), and signal transduction(ERBB2; V-CAM; SOS1) whereas, underexpressed genes (KLK3; KLK2; DHCR24) are androgen-regulated genes (ARGs) in androgen-responsive (LNCaP) cell. [3] Dutasteride inhibits FASN mRNA, protein expression and enzymatic activity in prostate cancer cells. [4]

In vivo Dutasteride (100 mg/kg/day) has prostates about half as large as those in intact male rats treated with vehicle alone. Dutasteride is orally bioavailable and because of its mechanism of action it easily overcomes the potential liability of being >99% plasma protein bound. [1]

Protocol (from reference)

Solubility (25°C)

In vitro

In vivo

Add solvents to the product individually and in order
(Data is from Selleck tests instead of citations):
2% DMSO+30% PEG 300+2% Tween 80+ddH2O
For best results, use promptly after mixing.


Chemical Information

Molecular Weight 528.53


CAS No. 164656-23-9
Storage 3 years -20°C powder
2 years -80°C in solvent
Smiles CC12CCC3C(C1CCC2C(=O)NC4=C(C=CC(=C4)C(F)(F)F)C(F)(F)F)CCC5C3(C=CC(=O)N5)C

In vivo Formulation Calculator (Clear solution)

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

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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

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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.

Molarity Calculator

Mass Concentration Volume Molecular Weight

Clinical Trial Information

NCT Number Recruitment Interventions Conditions Sponsor/Collaborators Start Date Phases
NCT03669692 Withdrawn Behavioral: Caloric Restriction|Behavioral: Control Prostatic Hyperplasia Benign|Metabolic Syndrome Complexo Hospitalario Universitario de A Coruña July 10 2018 Not Applicable
NCT02839122 Completed Drug: Tadalafil|Drug: Dutasteride Benign Prostate Hyperplasia Yuyu Pharma Inc. May 2016 Phase 1
NCT02352311 Completed Drug: DKF-313|Drug: AVODART|Drug: CIALIS Benign Prostate Hyperplasia|Healthy Dongkook Pharmaceutical Co. Ltd. January 2015 Phase 1

(data from https://clinicaltrials.gov, updated on 2022-08-01)

Tech Support

Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

Handling Instructions

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