Rhod-FF, tripotassium salt

Calcium measurement is critical for numerous biological investigations. Fluorescent probes that show spectral responses upon binding Ca2+ have enabled researchers to investigate changes in intracellular free Ca2+ concentrations by using fluorescence microscopy, flow cytometry, fluorescence spectroscopy and fluorescence microplate readers. Rhod-FF has a lower binding affinity for Ca2+ and is suitable for Ca2+ measurements from 10 to 200 uM. Like the parent Rhod-2 indicator, Rhod-FF is essentially nonfluorescent in the absence of divalent cations and exhibits strong fluorescence enhancement with no spectral shift upon binding Ca2+.

Protocol

COA

Catalog	Size	Price	Quantity
21075	1 mg	Price
21076	10x50 ug	Price

Calculators

Common stock solution preparation

Table 1. Volume of Water needed to reconstitute specific mass of Rhod-FF, tripotassium salt to given concentration. Note that volume is only for preparing stock solution. Refer to sample experimental protocol for appropriate experimental/physiological buffers.

	0.1 mg	0.5 mg	1 mg	5 mg	10 mg
1 mM	112.233 µL	561.167 µL	1.122 mL	5.612 mL	11.223 mL
5 mM	22.447 µL	112.233 µL	224.467 µL	1.122 mL	2.245 mL
10 mM	11.223 µL	56.117 µL	112.233 µL	561.167 µL	1.122 mL

Molarity calculator

Enter any two values (mass, volume, concentration) to calculate the third.

Mass (Calculate)		Molecular weight		Volume (Calculate)		Concentration (Calculate)		Moles
mg	÷	891 g/mol	=	mL	x	mM	=	mmol

Citations

View all 3 citations: Citation Explorer

G{\"o}-VIP-Nr. 24: Kategorie basic science/{\"O}zge Demet {\"O}z{\c{c}}ete \& Tobias Moser

Authors:

{\"O}z{\c{c}}ete, {\"O}zge D

Journal:

The EMBO Journal (2020): e106010

Activation of mitochondrial transient receptor potential vanilloid 1 channel contributes to microglial migration

Authors:

Miyake, Takahito and Shirakawa, Hisashi and Nakagawa, Takayuki and Kaneko, Shuji

Journal:

Glia (2015): 1870--1882

ER stress in human hepatic cells treated with Efavirenz: mitochondria again

Authors:

Apostolova, Nadezda and Gomez-Sucerquia, Leysa J and Alegre, Fern and o , undefined and Funes, Haryes A and Victor, Victor M and Barrachina, Maria D and Blas-Garcia, Ana and Esplugues, Juan V

Journal:

Journal of hepatology (2013): 780--789

Physical properties

Dissociation constant (K_d, nM)	19000
Molecular weight	891.00
Solvent	Water

Spectral properties

Excitation (nm)	553
Emission (nm)	577

Storage, safety and handling

H-phrase	H303, H313, H333
Hazard symbol	XN
Intended use	Research Use Only (RUO)
R-phrase	R20, R21, R22
Storage	Freeze (< -15 °C); Minimize light exposure
UNSPSC	12352200

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Page updated on October 13, 2025