MQAE

Alias: N-[ethoxycarbonylmethyl]-6-methoxy-quinolinium bromide;MQAE;
Cat No.:V0100 Purity: ≥98%
MQAE (N-[ethoxycarbonylmethyl]-6-methoxy-quinolinium bromide) isan analog of 6-methoxyquinolinium.
MQAE Chemical Structure CAS No.: 162558-52-3
Product category: Fluorescent Dye
This product is for research use only, not for human use. We do not sell to patients.
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Purity & Quality Control Documentation

Purity: ≥98%

Purity: ≥98%

Product Description

MQAE (N-[ethoxycarbonylmethyl]-6-methoxy-quinolinium bromide) is an analog of 6-methoxyquinolinium. It is a novel fluorescent indicator/dye for detection of intracellular Cl-. MQAE detects the ion when quenched via collision with chloride. It is more frequently used for chloride measurement as it is more sensitive and selective than 36Cl and microelectrode-based methods. MQAE is a useful fluorescence dye for noninvasive measurements of the intracellular Cl-.

Biological Activity I Assay Protocols (From Reference)
ln Vitro
Preparation of MQAE Working Solution Using Method 1 Dilute the stock solution in Krebs-hepes buffer (20 mM HEPES, 128 mM NaCl, 2.5 mM KCl, 2.7 mM CaCl2, 1 mM MgCl2, 16 mM glucose, pH 7.4) to obtain 5- 10 mM MQAE working solution. Note: Please prepare the MQAE working fluid for immediate use by adjusting its concentration to the current circumstances. 2 Cell staining 2.1 Use Krebs-HEPES buffer to wash cells 3 times, 2 minutes each time. 2.2 Add 1 milliliter of the MQAE working solution, then let it sit at room temperature for 30 to 60 minutes. 2.3 After adding PBS, wash the cells twice for five minutes each. 2.4 Use a flow cytometer or fluorescence microscope to make observations. 3 Storage conditions -20°C, protected from light for one year 4 Notes 4.1 It is recommended to use MQAE for staining. 8–10×106/mL is the suggested cell density. 4.2 Please modify the incubation period and concentration of the MQAE working solution based on the actual circumstances. 4.3 This product should only be used by experts conducting scientific research; it should not be incorporated into food or medication, nor used for clinical diagnosis or treatment. 4.4 Please wear disposable gloves and a lab coat for your health and safety.
ln Vivo
In living anesthetized mice, cortical cells are labeled using the multicell bolus loading procedure. In combination with two-photon microscopy, this procedure enables in vivo visualization of cell bodies of neurons and astrocytes as well as some astrocytic processes and allows one to monitor changes in the intracellular chloride concentration in dozens of individual cells.
Animal Protocol

Mice
References
[1]. Kovalchuk Y, et al. Two-photon chloride imaging using MQAE in vitro and in vivo. Cold Spring Harb Protoc. 2012 Jul 1;2012(7):778-85.
[2]. Andersson C, et al. Determination of chloride efflux by X-ray microanalysis versus MQAE-fluorescence. Microsc Res Tech. 2
[3]. Koncz C, et al. Use of MQAE for measurement of intracellular [Cl-] in cultured aortic smooth muscle cells. Am J Physiol. 1994 Dec;267(6 Pt 2):H2114-23.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C14H16BRNO3
Molecular Weight
326.19
CAS #
162558-52-3
Related CAS #
162558-52-3
SMILES
COC1=CC2=CC=C[N+](CC(OCC)=O)=C2C=C1.[Br-]
Chemical Name
1-(2-ethoxy-2-oxoethyl)-6-methoxy-quinolinium, monobromide
Synonyms
N-[ethoxycarbonylmethyl]-6-methoxy-quinolinium bromide;MQAE;
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)
Solubility Data
Solubility (In Vitro)
DMSO: >30 mg/mL
Water:N/A
Ethanol:N/A
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 3.0657 mL 15.3285 mL 30.6570 mL
5 mM 0.6131 mL 3.0657 mL 6.1314 mL
10 mM 0.3066 mL 1.5328 mL 3.0657 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.

Calculator

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An example of molarity calculation using the molarity calculator is shown below:
What is the mass of compound required to make a 10 mM stock solution in 5 ml of DMSO given that the molecular weight of the compound is 350.26 g/mol?
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  • The answer of 17.513 mg appears in the Mass box. In a similar way, you may calculate the volume and concentration.

Dilution Calculator allows you to calculate how to dilute a stock solution of known concentrations. For example, you may Enter C1, C2 & V2 to calculate V1, as detailed below:

What volume of a given 10 mM stock solution is required to make 25 ml of a 25 μM solution?
Using the equation C1V1 = C2V2, where C1=10 mM, C2=25 μM, V2=25 ml and V1 is the unknown:
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Molecular Weight Calculator allows you to calculate the molar mass and elemental composition of a compound, as detailed below:

Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
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In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
Step 2: Enter in vivo formulation (This is only a calculator, not the exact formulation for a specific product. Please contact us first if there is no in vivo formulation in the solubility section.)
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Calculation results

Working concentration mg/mL;

Method for preparing DMSO stock solution mg drug pre-dissolved in μL DMSO (stock solution 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 stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
             (2) Be sure to add the solvent(s) in order.

Clinical Trial Information
NCT Number Recruitment interventions Conditions Sponsor/Collaborators Start Date Phases
NCT02254551 Terminated Has Results Drug: LDE225
Drug: Bortezomib
Multiple Myeloma SCRI Development Innovations, LLC January 2015 Phase 2
NCT04066504 Active, not recruiting Drug: sonidegib Basal Cell Carcinoma Sun Pharmaceutical Industries Limited March 11, 2019
NCT02086513 Terminated Drug: LDE225 Graft Versus Host Disease Massachusetts General Hospital April 2014 Phase 1
NCT04007744 Recruiting Biological: Pembrolizumab
Drug: Sonidegib
Clinical Stage III Cutaneous Melanoma AJCC v8
Clinical Stage III Gastric Cancer AJCC v8
Mayo Clinic February 13, 2020 Phase 1
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