FM1-43 

FM1-43 is a very lipophilic, water-soluble styrene dyes, can specifically bind to cell membranes and inner membrane organelles to produce fluorescence. FM1-43 is widely used in endocytic and exospic membrane structure markers.

Guide (The following is the experimental plan we recommend. This plan serves only as a reference guide. The specific operations should be adjusted according to your actual needs.)
1. FM Working Fluid Preparation 1.1 Preparation of Storage Solution Prepare a 5 mM stock solution using DMSO.
1.2 Preparation of Working Solution Prepare the FM 1-43 working solution at a concentration of 5-20 μM using the preheated HBSS solution.
Note: Please adjust the concentration of the FM 1-43 working solution according to the actual situation, and prepare it as needed.

2. Cell Staining (Suspension Cells) 2.1 Centrifuge the cells and add PBS for two washes, each for 5 minutes. The cell density is 1×10⁶ cells/mL. 2.2 Add 1 mL of FM working solution and incubate at room temperature for 5 to 30 minutes.
2.3 400 grams, centrifuge for 3-4 minutes, then discard the supernatant.
2.4 Add PBS to wash the cells twice, for 5 minutes each time.
2.5 After resuspending the cells in 1 mL of serum-free medium or PBS, observe them using a fluorescence microscope or a flow cytometer.
3. Cytological staining (adherent cells) 3.1 Cultivate adherent cells on a sterile cover glass.
3.2 Remove the cover glass from the culture medium and aspirate away the excess medium.
3.3 Add 100 μL of the dye working solution and gently shake to ensure complete coverage of the cells. Incubate for 5 to 30 minutes.
3.4 Remove the dye working solution and wash with the culture medium 2-3 times, for 5 minutes each time. Then observe using a fluorescence microscope or flow cytometer.

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

611.54

C₃₀H₄₉Br₂N₃

149838-22-2

Solid

Orange to red

585

480

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

Room temperature in continental US; may vary elsewhere.

4°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)

* 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.

• [1]. J E Gale, et al. FM1-43 dye behaves as a permeant blocker of the hair-cell mechanotransducer channel. J Neurosci. 2001 Sep 15;21(18):7013-25.  [Content Brief]