Molecular Probes™ FM 1-43 Dye (N-(3-Triethylammoniumpropyl)-4-(4-(Dibutylamino) Styryl) Pyridinium Dibromide)

Membrane probe

Brand: Invitrogen

Manufacturer Part Number: T35356

X10 N-(3-Triethylammoniumprop 100µgFM 1-43 membrane probe is an excellent reagent

UNSPSC: 12161500

Code: 50

Additional Details:
Additional Details: Weight: 0.03000kg

Product Code. 11500786

Quantity Price
1 £391.00 / 1000µg
EU Stock 4
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For Research Use Only. All usage must comply with product instructions.

Description and Specification


Quantity 10 x 100μg
Target Plasma Membrane
For Use With (Equipment) Fluorescence Microscope
Detection Method Fluorescent
Color Red

FM 1-43 is an excellent reagent both for identifying actively firing neurons and for investigating the mechanisms of activity-dependent vesicle cycling. This water-soluble dye, which is nontoxic to cells and virtually nonfluorescent in aqueous medium, is believed to insert into the outer leaflet of the cell membrane where it becomes intensely fluorescent. In a neuron that is actively releasing neurotransmitters, the dye becomes internalized within the recycled synaptic vesicles and the nerve terminals become brightly stained. The nonspecific staining of cell-surface membranes can simply be washed off prior to viewing.

FM 1-43 membrane probe is also available as 1mg packaged into 10 vials, each containing 100μg (T-35356). FM 1-43FX membrane probe (F-35355), an analog of FM 1-43 membrane probe that can be fixed in place using aldehyde-based fixatives, is also available.

Cell Analysis, Cell Tracing & Tracking, Cell Viability, Proliferation & Function, Endocytosis, Exocytosis & Phagocytosis, General Cell Tracing, Neuronal Tracing