2. GPCR/G Protein Neuronal Signaling
  3. Adrenergic Receptor
  4. Naftopidil

Naftopidil  (Synonyms: KT-611; BM-15275)

Cat. No.: HY-B0391 Purity: 98.47%
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Naftopidil (KT-611) is is a selective alpha1-adrenoceptor antagonist, with Kis of 3.7 nM, 20 nM and 1.2 nM for the cloned human α1a-, α1b- and α1d-adrenoceptor subtypes, respectively. Naftopidil has antiproliferative effects. Naftopidil can be used for the research of prostate hyperplasia.

For research use only. We do not sell to patients.

Naftopidil Chemical Structure

Naftopidil Chemical Structure

CAS No. : 57149-07-2

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Solid + Solvent (Highly Recommended)
10 mM * 1 mL in DMSO
ready for reconstitution
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1 g USD 80 In-stock
5 g USD 108 In-stock
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Based on 1 publication(s) in Google Scholar

Other Forms of Naftopidil:

Naftopidil Related Antibodies

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Description

Naftopidil (KT-611) is is a selective alpha1-adrenoceptor antagonist, with Kis of 3.7 nM, 20 nM and 1.2 nM for the cloned human α1a-, α1b- and α1d-adrenoceptor subtypes, respectively. Naftopidil has antiproliferative effects. Naftopidil can be used for the research of prostate hyperplasia[1][2].

IC50 & Target[1]

Alpha-1A adrenergic receptor

3.7 nM (Ki)

Alpha-1B adrenergic receptor

20 nM (Ki)

Alpha-1D adrenergic receptor

1.2 nM (Ki)

In Vitro

Naftopidil suppresses human prostate tumor growth by altering interactions between tumor cells and stroma[2].
Naftopidil (10 μM for PCa cells, 0.1-10 μM for PrSC; 3 days) shows growth inhibitory effects on PCa cells and PrSC[2].
Naftopidil (50 μM for E9 cells, 25 μM for PrSC; 48 hours) increases the level of cell-cycle regulatory protein p27 in E9 cells, but not PrSC[2].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Naftopidil Related Antibodies

Cell Proliferation Assay[2]

Cell Line: PCa cells, PrSC
Concentration: 10 μM (PCa cells); 0.1 μM, 1 μM, 10 μM (PrSC)
Incubation Time: 3 days
Result: Exhibited growth inhibitory effects on PCa cells and PrSC in dose-dependent manners.

Western Blot Analysis[2]

Cell Line: PCa cells, PrSC
Concentration: 50 μM (E9 cells), 25 μM (PrSC)
Incubation Time: 48 hours
Result: Increased the level of cell-cycle regulatory protein p27 in E9 cells, but not PrSC.
In Vivo

Naftopidil (10 mg/kg; p.o; daily; for 28 days) decreases microvessel density (MVD) in E9+PrSC tumors mice model[2].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Animal Model: Male athymic mice (7-8 weeks), with E9+PrSC xenograft[2]
Dosage: 10 mg/kg
Administration: Oral administration, daily, for 28 days
Result: Decreased tumor weights.
Clinical Trial
Molecular Weight

392.49

Formula

C24H28N2O3
CAS No.
Appearance

Solid

Color

White to off-white

SMILES

OC(CN1CCN(C(C=CC=C2)=C2OC)CC1)COC3=CC=CC4=CC=CC=C34
Shipping

Room temperature in continental US; may vary elsewhere.
Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 2 years
-20°C 1 year
Solvent & Solubility
In Vitro: 

DMSO : 33.33 mg/mL (84.92 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

H2O : < 0.1 mg/mL (insoluble)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.5478 mL 12.7392 mL 25.4784 mL
5 mM 0.5096 mL 2.5478 mL 5.0957 mL
View the Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

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  • Dilution Calculator

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Mass
=
Concentration
×
Volume
×
Molecular Weight *

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

×
Volume (start)

V1

=
Concentration (final)

C2

×
Volume (final)

V2

In Vivo:

Select the appropriate dissolution method based on your experimental animal and administration route.

For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for in vivo experiments, it is recommended to prepare freshly and use it on the same day.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

  • Protocol 1

    Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% Saline

    Solubility: ≥ 2.5 mg/mL (6.37 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.

    Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
  • Protocol 2

    Add each solvent one by one:  10% DMSO    90% (20% SBE-β-CD in Saline)

    Solubility: 2.5 mg/mL (6.37 mM); Suspended solution; Need ultrasonic

    This protocol yields a suspended solution of 2.5 mg/mL. Suspended solution can be used for oral and intraperitoneal injection.

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.

    Preparation of 20% SBE-β-CD in Saline (4°C, storage for one week): 2 g SBE-β-CD powder is dissolved in 10 mL Saline, completely dissolve until clear.
In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
(per animal)

g

Dosing volume
(per animal)

μL

Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
%
DMSO +
% 
+
%
Tween-80 +
%
Saline
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).
Calculation results:
Working solution concentration: mg/mL
Method for preparing stock solution: mg drug dissolved in μL  DMSO (Stock solution concentration: mg/mL).
The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only. If necessary, please contact MedChemExpress (MCE).
Method for preparing in vivo working solution for animal experiments: Take μL DMSO stock solution, add μL . μL , mix evenly, next add μL Tween 80, mix evenly, then add μL Saline.
 If the continuous dosing period exceeds half a month, please choose this protocol carefully.
Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
Purity & Documentation
References

Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO 1 mM 2.5478 mL 12.7392 mL 25.4784 mL 63.6959 mL
5 mM 0.5096 mL 2.5478 mL 5.0957 mL 12.7392 mL
10 mM 0.2548 mL 1.2739 mL 2.5478 mL 6.3696 mL
15 mM 0.1699 mL 0.8493 mL 1.6986 mL 4.2464 mL
20 mM 0.1274 mL 0.6370 mL 1.2739 mL 3.1848 mL
25 mM 0.1019 mL 0.5096 mL 1.0191 mL 2.5478 mL
30 mM 0.0849 mL 0.4246 mL 0.8493 mL 2.1232 mL
40 mM 0.0637 mL 0.3185 mL 0.6370 mL 1.5924 mL
50 mM 0.0510 mL 0.2548 mL 0.5096 mL 1.2739 mL
60 mM 0.0425 mL 0.2123 mL 0.4246 mL 1.0616 mL
80 mM 0.0318 mL 0.1592 mL 0.3185 mL 0.7962 mL
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Naftopidil Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

Keywords:

Naftopidil57149-07-2KT-611 BM-15275KT611KT 611BM15275BM 15275BM-15275Adrenergic ReceptorBeta ReceptorprostatehyperplasiacanineprostaticpressureInhibitorinhibitorinhibit

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