Rhodamine 123, 25 mg
Rhodamine 123, 25 mg
Invitrogen™

Rhodamine 123, 25 mg

Rhodamine 123 is a cell-permeant, cationic, green-fluorescent dye that is readily sequestered by active mitochondria without cytotoxic effects. This productRead more
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Catalog number R302
Price (USD)
146.00
Each
Add to cart
Price (USD)
146.00
Each
Add to cart
Rhodamine 123 is a cell-permeant, cationic, green-fluorescent dye that is readily sequestered by active mitochondria without cytotoxic effects. This product has been used to assay mitochondrial membrane potential in populations of apoptotic cells.

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For Research Use Only. Not for use in diagnostic procedures.
Specifications
ColorGreen
Detection MethodFluorescence
For Use With (Equipment)Fluorescence Microscope
Product TypeRhodamine 123
Quantity25 mg
Shipping ConditionRoom Temperature
Sub Cellular LocalizationMitochondria
Unit SizeEach
Contents & Storage
Store in freezer -5°C to -30°C and protect from light.

Frequently asked questions (FAQs)

What is the excitation and emission wavelength for rhodamine?

Rhodamine is a generic term for a wide variety of cationic dyes whose fluorescence emission can range from green, orange to red. The table below lists the excitation and emission maxima (nm), as well as molar extinction coefficients (“EC”; cm-1 M-1), for various rhodamine dyes (data derived with dye dissolved in methanol).

Dye Excitation Emission EC
Rhodamine B 568 583 88,000
Rhodamine 123 507 529 101,000
Rhodamine 110 499 521 92,000
Rhodamine 6G 528 551 105,000
XRITC 572 596 92,000


Find additional tips, troubleshooting help, and resources within our Cell Analysis Support Center.

I am seeing high background outside of my neuronal cells when using membrane potential indicators. What can I do to reduce background?

If you use our FluoVolt Membrane Potential Kit (Cat. No. F10488), the kit provides a background suppressor to reduce this problem. For other indicators, consider the use of BackDrop Background Suppressor (Cat no. R37603, B10511, and B10512).

Find additional tips, troubleshooting help, and resources within our Cell Analysis Support Center.

What is the difference between fast and slow-response membrane potential probes?

Molecules that change their structure in response to the surrounding electric field can function as fast-response probes for the detection of transient (millisecond) potential changes. Slow-response dyes function by entering depolarized cells and binding to proteins or membranes. Increased depolarization results in additional dye influx and an increase in fluorescence, while hyperpolarization is indicated by a decrease in fluorescence. Fast-response probes are commonly used to image electrical activity from intact heart tissues or measure membrane potential changes in response to pharmacological stimuli. Slow-responding probes are often used to explore mitochondrial function and cell viability.

Find additional tips, troubleshooting help, and resources within our Cell Analysis Support Center.

What type of membrane potential indicators do you offer and how should I choose one for my experiment?

A membrane potential indicator selection guide can be found here (https://www.thermofisher.com/us/en/home/life-science/cell-analysis/cell-viability-and-regulation/ion-indicators/membrane-potential-indicators.html).

Find additional tips, troubleshooting help, and resources within our Cell Analysis Support Center.