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Hoechst 33342

Name: Hoechst 33342
Brand: Selleck Chemicals
SKU: S0485
Rating: 5 (4 reviews)

Synonyms: Pibenzimol, bisBenzimide H 33342, HOE 33342, HO342

Catalog No.S0485 Purity: 99.94%

.Hoechst 33342 (Pibenzimol, bisBenzimide H 33342, HOE 33342, HO342) is a membrane-permeant fluorescent stain that can stain live cells. Hoechst 33342 binds to adenine-thymine-rich regions of DNA in the minor groove and greatly increases the fluorescence. It allows easy visualization of the nucleus in interphase cells and chromosomes in mitotic cells.

Hoechst 33342 Chemical Structure

CAS: 23491-52-3

Selleck's Hoechst 33342 has been cited by 4 publications

Purity & Quality Control

Batch: S048501 Water] 90 mg/mL] false] DMSO] 10 mg/mL] false] Ethanol] Insoluble] false Purity: 99.94%

99.94

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Biological Activity

Description

Targets

DNA ^[1]

In vitro
In vitro	1.1 Preparation of the stock solution Dissolve 10 mg of Hoechst in 5 mL DMSO Note: It is recommended to store the stock solution at 4℃ or -20℃ away from light and avoid repetitive freeze-thaw cycles. 1.2 Preparation of Hoechst working solution Dilute the stock solution in serum-free cell culture medium or PBS to obtain final concentration 10 μg/mL Hoechst working solution. Note: Please adjust the concentration of Hoechst working solution according to the actual situation. 1.Cell staining 2.1 Suspension cells（6-well plate） a. Centrifuge at 1000 g at 4℃ for 3-5 minutes and then discard the supernatant. Wash twice with PBS, 5 minutes each time. The cell density is 1×106/mL. b. Add 1 mL of working solution, and then incubate at room temperature for 3-10 minutes. c. Centrifuge at 400 g at 4℃ for 3-4 minutes and then discard the supernatant. d. Wash twice with PBS, 5 minutes each time. e. Resuspend cells with serum-free cell culture medium or PBS. Observation by fluorescence microscopy or flow cytometry. 2.2 Adherent cells a. Culture adherent cells on sterile coverslips. b. Remove the coverslip from the medium and aspirate excess medium. c. Add 100 μL of working solution, gently shake it to completely cover the cells,and then incubate at room temperature for 3-10 minutes. d. Wash twice with medium, 5 minutes each time.Observation by fluorescence microscopy or flow cytometry.

References

[1] Brad Chazotte. Cold Spring Harb Protoc. 2011 Jan 1;2011(1):pdb.prot5557.

Chemical lnformation & Solubility

Molecular Weight	452.55	Formula	C₂₇H₂₈N₆O
CAS No.	23491-52-3	SDF	--
Smiles	CCOC1=CC=C(C=C1)C2=NC3=C(N2)C=C(C=C3)C4=NC5=C(N4)C=C(C=C5)N6CCN(CC6)C
Storage (From the date of receipt)	3 years -20°C powder	Storage of Stock Solutions Aliquot the stock solutions to avoid repeated freeze-thaw cycles	1 year-80°Cin solvent
Storage (From the date of receipt)	3 years -20°C powder		1 month-20°Cin solvent

In vitro
Batch:

Water : 90 mg/mL

DMSO : 10 mg/mL ( (22.09 mM)； Moisture-absorbing DMSO reduces solubility. Please use fresh DMSO.)

Ethanol : Insoluble

Molecular Weight Calculator

In vivo
Batch:

Add solvents to the product individually and in order.

In vivo Formulation Calculator

Preparing Stock Solutions

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
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Dilution Calculator Molecular Weight Calculator

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.

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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