Di-4-ANEPPS, potentiometric probe

Neuroscience Microscopy Cell membrane Membrane potential measurement
Cat. # Quantity Price Lead time
3429-50ug 50 ug –   in stock
3429-5mg 5 mg $225 in stock
Sample request
Found better price? Let us know and we will propose the way forward!

Di-4-ANEPPS is an Amino-Naphthyl-Ethenyl-Pyridinium (ANEP) family voltage-sensitive dye widely used as a fast-responding membrane potential probe. The dye is non-fluorescent until bound to membranes and fluoresces only in response to electrical potential fluctuations in its environment.

The optical response of Di-4-ANEPPS is fast enough to detect transient (millisecond) potential changes in excitable cells, such as single neurons, cardiac cells, and intact brains. The magnitude of potential-dependent fluorescence change is about 2-10% per 100 mV. The dye also displays a potential-dependent shift in excitation spectrum, permitting the quantitation of cell membrane potential using ratiometric techniques.

Di-4-ANEPPS is quickly internalized by cells, so it is primarily used for short-term studies. We also provide Di-8-ANEPPS, which is more hydrophobic and better retained in the outer leaflet of the cell membrane. Since Di-4-ANEPPS binds to the cell membrane, it can also be used as a plasma membrane and endocytosis marker.

Excitation/emission maxima of Di-4-ANEPPS in methanol are 496/705 nm, respectively. In lipids and cell membranes, the excitation and emission spectra of the dye are typically blue-shifted compared to organic solvent.

Di-4-ANEPPS can be introduced into cells by directly adding the stock solution to the culture medium, using Pluronic® F-127, or retrograde labeling. Use a 5-10 μM working concentration as a starting point. The exact dye concentration should be defined experimentally.

Di-4-ANEPPS, potentiometric probe, 3429-5mg
Di-4-ANEPPS, potentiometric probe, 3429-5mg
Di-4-ANEPPS, potentiometric probe, 3429-5mg
Structure of Di-4-ANEPPS
Download in
ChemDraw format

Customers also purchased with this product

LumiCell CDr20 Microglia Stain

CDr20 is a turn-on fluorescent chemical probe for specific labeling and visualizing microglia in cell cultures and live brains.

SynaptoProbe® Green

SynaptoProbe® Green is an analog of FM®1-43, a widely used green fluorescent dye for staining synaptic vesicles and studying synaptic activity in the synapses or neuromuscular junctions.

EDC (N-ethyl-N'-(3-dimethylaminopropyl)carbodiimide), coupling grade

Water soluble carbodiimide for the coupling of carboxylic acids with amines.

General properties

Appearance: red solid
Molecular weight: 480.67
CAS number: 90134-00-2
Molecular formula: C28H36N2O3S
Solubility: ethanol, DMF, DMSO
Quality control: NMR 1H and HPLC-MS (95+%)
Storage conditions: 24 months after receival at -20°C in the dark. Transportation: at room temperature for up to 3 weeks. Desiccate.
MSDS: Download
Product specifications
Pluronic® is a trademark of BASF-Wyandotte
This Product is offered and sold for research purposes only. It has not been tested for safety and efficacy in food, drug, medical device, cosmetic, commercial or any other use. Supply does not express or imply authorization to use for any other purpose, including, without limitation, in vitro diagnostic purposes, in the manufacture of food or pharmaceutical products, in medical devices or in cosmetic products.
Your item has been added. View your cart or proceed to checkout
The count of items is incorrect.