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  3. FM4-64

FM4-64 is a very lipophilic, water-soluble styrene dyes, can specifically bind to cell membranes and inner membrane organelles to produce fluorescence. FM4-64 is widely used in endocytic and exospic membrane structure markers.

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CAS. Nr. : 162112-35-8

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Solid + Solvent (Highly Recommended)
10 mM * 1 mL in DMSO
ready for reconstitution
Auf Lager
Solution
10 mM * 1 mL in DMSO Auf Lager
Solid
1 mg Auf Lager
5 mg Auf Lager
10 mg Auf Lager
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100 mg   Angebot einholen  

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Based on 22 publication(s) in Google Scholar

Other Forms of FM4-64:

Top Publications Citing Use of Products

    FM4-64 purchased from MedChemExpress. Usage Cited in: J Extracell Vesicles. 2025 Jul;14(7):e70131.  [Abstract]

    FM4-64 (1 µM; 30 min). Confocal microscopy images of MG1655 stained with SYTOX (nucleic acid dye, green) and FM4‐64 (outer membrane dye, red) revealed that the SYTOX/FM4‐64 ratio increased under ENR treatment, indicating elevated membrane permeability.

    FM4-64 purchased from MedChemExpress. Usage Cited in: J Extracell Vesicles. 2025 Jul;14(7):e70131.  [Abstract]

    FM4-64 (1 µM; 30 min). Fluorescence microscopy indicated no significant change in peptidoglycan integrity in ENR-treated ΔrecA strains compared to untreated controls.

    FM4-64 purchased from MedChemExpress. Usage Cited in: J Extracell Vesicles. 2025 Jul;14(7):e70131.  [Abstract]

    FM4-64 (1 µM; 30 min). Fluorescence microscopy analysis using the SYTOX and FM4‐64 revealed increased cytoplasmic staining in both MG1655 and endolysin‐deficient strains (Δessd-1ΔrrrdΔrzod) under ENR stress, indicating membrane damage.

    FM4-64 purchased from MedChemExpress. Usage Cited in: Microbiome. 2024 Dec 21;12(1):272.  [Abstract]

    FM4-64 (20 μg/mL; 1 min). Representative images obtained from confocal laser scanning microscopy to analyze the behavior of AMP1. B. subtilis cells were treated with coumarin 343-labeled AMP1 at a concentration of 100 μM for various durations before observation. During observation, the B. subtilis cells membrane was stained with FM4-64.

    FM4-64 purchased from MedChemExpress. Usage Cited in: Adv Sci (Weinh). 2024 Jul 12:e2406473.  [Abstract]

    FM4-64 (1 µg/mL; 30 min). Confocal micrographs of vacuole staining (FM4‐64) and localization of Atg8 proteins in the GFP‐Atg8 mutant cells following the indicated treatment. DIC is Differential Interference Contrast; FM4‐64 was visualized as red fluorescent; Atg 8 proteins were visualized as green fluorescent.
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    Beschreibung

    FM4-64 is a very lipophilic, water-soluble styrene dyes, can specifically bind to cell membranes and inner membrane organelles to produce fluorescence. FM4-64 is widely used in endocytic and exospic membrane structure markers.

    In Vitro

    Guide (Following is our recommended protocol. This protocol only provides a guideline, and should be modified according to your specific needs).
    1. Preparation of FM working solution
    1.1 Preparation of the stock solution
    Dissolve FM in DMSO to obtain 5 mM of FM.
    1.2 Preparation of FM working solution
    Dilute the stock solution in HBSS to obtain 5-20 μM of FM working solution.
    Note: Please adjust the concentration of FM working solution according to the actual situation.
    2. Cell staining (Suspension cells)
    2.1. Centrifuge at 1000 g at 4°C for 3-5 minutes and then discard the supernatant. Wash twice with PBS, 5 minutes each time. The cell density is 1×106/mL
    2.2. Add 1 mL of working solution, and then incubate at room temperature for 5-30 minutes.
    2.3. Centrifuge at 400 g at 4°C for 3-4 minutes and then discard the supernatant.
    2.4. Wash twice with PBS, 5 minutes each time.
    2.5. Resuspend cells with serum-free cell culture medium or PBS. Observation by fluorescence microscopy or flow cytometry.
    3. Cell staining (Adherent cells)
    3.1 Culture adherent cells on sterile coverslips.
    3.2. Remove the coverslip from the medium and aspirate excess medium.
    3.3. Add 100 μL of working solution, gently shake it to completely cover the cells, and then incubate at room temperature for 5-30 minutes.
    3.4. Wash twice with medium, 5 minutes each time. Observation by fluorescence microscopy or flow cytometry.

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

    Molekulargewicht

    607.51

    Formel

    C30H45Br2N3

    CAS. Nr.
    Appearance

    Solid

    Color

    Dark gray to black

    Emission (Em)

    730

    Excitation (Ex)

    510

    SMILES

    CC[N+](CCC[N+]1=CC=C(/C=C/C=C/C=C/C2=CC=C(N(CC)CC)C=C2)C=C1)(CC)CC.[Br-].[Br-]

    Versand

    Room temperature in continental US; may vary elsewhere.

    Speicherung

    -20°C, sealed storage, away from moisture and light

    *In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light)

    Lösungsmittel & Löslichkeit
    In Vitro: 

    DMSO : 50 mg/mL (82.30 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

    Preparing
    Stock Solutions
    Concentration Solvent Mass 1 mg 5 mg 10 mg
    1 mM 1.6461 mL 8.2303 mL 16.4606 mL
    5 mM 0.3292 mL 1.6461 mL 3.2921 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, 6 months; -20°C, 1 month (sealed storage, away from moisture and light). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

    • Molaritätsrechner

    • Verdünnungsrechner

    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 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.
    Calculation results:
    Working solution concentration: mg/mL
    Reinheit & Dokumentation

    Purity: 99.94%

    Verweise

    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, 6 months; -20°C, 1 month (sealed storage, away from moisture and light). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

    Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
    DMSO 1 mM 1.6461 mL 8.2303 mL 16.4606 mL 41.1516 mL
    5 mM 0.3292 mL 1.6461 mL 3.2921 mL 8.2303 mL
    10 mM 0.1646 mL 0.8230 mL 1.6461 mL 4.1152 mL
    15 mM 0.1097 mL 0.5487 mL 1.0974 mL 2.7434 mL
    20 mM 0.0823 mL 0.4115 mL 0.8230 mL 2.0576 mL
    25 mM 0.0658 mL 0.3292 mL 0.6584 mL 1.6461 mL
    30 mM 0.0549 mL 0.2743 mL 0.5487 mL 1.3717 mL
    40 mM 0.0412 mL 0.2058 mL 0.4115 mL 1.0288 mL
    50 mM 0.0329 mL 0.1646 mL 0.3292 mL 0.8230 mL
    60 mM 0.0274 mL 0.1372 mL 0.2743 mL 0.6859 mL
    80 mM 0.0206 mL 0.1029 mL 0.2058 mL 0.5144 mL
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    Produktname:
    FM4-64
    Art. -Nr.:
    HY-103466
    Menge:
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