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BS-181

Name: BS-181
Brand: TargetMol
SKU: T1947
Rating: 4.5 (1 reviews)

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Catalog No. T1947Cas No. 1092443-52-1

Alias BS 181

BS-181 is a highly selective CDK7 inhibitor (IC50: 21 nM); >40-fold selective for CDK7 than CDK1/2/4/5/6/9.

BS-181

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Catalog No. T1947Alias BS 181Cas No. 1092443-52-1

BS-181 is a highly selective CDK7 inhibitor (IC50: 21 nM); >40-fold selective for CDK7 than CDK1/2/4/5/6/9.

Pack Size	Price	USA Warehouse	Global Warehouse
25 mg	$1,520	6-8 weeks	6-8 weeks
50 mg	$1,980	6-8 weeks	6-8 weeks
100 mg	$2,500	6-8 weeks	6-8 weeks

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In Stock Estimated shipping dateUSA Warehouse[1-2 days] Global Warehouse[5-7 days]

All TargetMol products are for research purposes only and cannot be used for human consumption. We do not provide products or services to individuals. Please comply with the intended use and do not use TargetMol products for any other purpose.

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Product Introduction

Bioactivity

Description	BS-181 is a highly selective CDK7 inhibitor (IC50: 21 nM); >40-fold selective for CDK7 than CDK1/2/4/5/6/9.
Targets&IC50	CDK7:21 nM, CDK6-CyclinD1:47 μM, CDK9-CyclinT:4.2 μM, CDK5-p35 NCK:3 μM, CDK4-CyclinD1:33 μM, CDK2-CyclinE:0.88 μM, CDK1-CyclinB:8.1 μM
In vitro	BS-181 promotes cell cycle arrest and inhibits cancer cell growth, and growth is inhibited for all cell lines tested, with IC50 values ranging from 11.5 to 37 μM. BS-181 inhibits RB phosphorylation at Ser795 and Ser821 with an apparent IC50 of 15 μM, similar to the IC50 obtained for P-Ser2 inhibition. BS-181 treatment of MCF-7 cells leads to G1 arrest at and apoptosis[1]. BS-181 inhibits GC cell and normal gastric epithelial RGM-1 cell line growth with inhibitory concentration (IC50) ranging from 17 to 22 μM and 6.5 μM, respectively. BS-181 significantly inhibits cell migration and invasion ability in a dose-dependent manner[2].
In vivo	BS-181 (5 mg/kg, 10 mg/kg, i.p.) inhibits the growth of MCF-7 tumors in nude mice. Intravenous (i.v) and i.p administration of 10 mg/kg BS-181 shows rapid clearance[1]. BS-181 (10 mg/kg/d or 20 mg/kg/d, i.p.) significantly inhibits the growth of tumor in a dose-dependent manner compared to the control group[2].
Kinase Assay	In vitro kinase inhibition.: Inhibition of CDK7 activity is measured by incubation of increasing amounts of BS-181 with purified recombinant CDK7/CycH/MAT1 complex, followed by measurement of free ATP remaining in the reaction using a luciferase assay, luciferase activity therefore providing a measure of inhibition of CDK7 activity for the determination of IC50.
Cell Research	Cell viability is detected using Cell Counting Kit (CCK-8 kit) according to supplier's introductions. Briefly, BGC823 cells are seeded at 104?cells per well for 48 hours with or without BS-181. Then, the absorbance is detected at 450 nm (reference at 650 nm) in each well.
Synonyms	BS 181

Chemical Properties

Molecular Weight	380.53
Formula	C₂₂H₃₂N₆
Cas No.	1092443-52-1
Smiles	CC(C)c1cnn2c(NCc3ccccc3)cc(NCCCCCCN)nc12
Relative Density.	1.16 g/cm3

Storage & Solubility Information

Storage

In solvent: -80°C for 1 year | Shipping with blue ice/Shipping at ambient temperature.

Solubility Information

DMSO: 10 mM, Sonication is recommended.

In Vivo Formulation

10% DMSO+40% PEG300+5% Tween-80+45% Saline: 1 mg/mL (2.63 mM), Sonication is recommended.

Please add the solvents sequentially, clarifying the solution as much as possible before adding the next one. Dissolve by heating and/or sonication if necessary. Working solution is recommended to be prepared and used immediately. The formulation provided above is for reference purposes only. In vivo formulations may vary and should be modified based on specific experimental conditions.

Solution Preparation Table

DMSO

	1mg	5mg	10mg	50mg
1 mM	2.6279 mL	13.1396 mL	26.2791 mL	131.3957 mL
5 mM	0.5256 mL	2.6279 mL	5.2558 mL	26.2791 mL
10 mM	0.2628 mL	1.3140 mL	2.6279 mL	13.1396 mL

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In Vivo Formulation Calculator (Clear solution)

Please enter your animal experiment information in the following box and click Calculate to obtain the stock solution preparation method and in vivo formula preparation method:

For example, if the intended dosage is 10 mg/kg for animals weighing 20 g , with a dosing volume of 100 μL per animal, TargetMol | Animal experiments

and a total of 10 animals are to be administered, using a formulation of TargetMol | reagent

10% DMSO+ 40% PEG300+ 5% Tween 80+ 45% Saline/PBS/ddH₂O , the resulting working solution concentration would be 2 mg/mL.

Stock Solution Preparation:

Dissolve 2 mg of the compound in 100 μL DMSO TargetMol | reagent to obtain a stock solution at a concentration of 20 mg/mL . If the required concentration exceeds the compound's known solubility, please contact us for technical support before proceeding.

Preparation of the In Vivo Formulation:

1) Add 100 μL of the DMSO TargetMol | reagent stock solution to 400 μL PEG300 and mix thoroughly until the solution becomes clear.

2) Add 50 μL Tween 80 and mix well until fully clarified.

3) Add 450 μL Saline,PBS or ddH₂O TargetMol | reagent and mix thoroughly until a homogeneous solution is obtained.

This example is provided solely to demonstrate the use of the In Vivo Formulation Calculator and does not constitute a recommended formulation for any specific compound. Please select an appropriate dissolution and formulation strategy based on your experimental model and route of administration.

All co-solvents required for this protocol, includingDMSO, PEG300/PEG400, Tween 80, SBE-β-CD, and Corn oil, are available for purchase on the TargetMol website.

Dose Conversion

You can also refer to dose conversion for different animals. More Dose Conversion

Tech Support

Please see Inhibitor Handling Instructions for more frequently ask questions. Topics include: how to prepare stock solutions, how to store products, and cautions on cell-based assays & animal experiments, etc