Rhodamine 123

Rhodamine 123
Names
	Preferred IUPAC name 7-Amino-10-[2-(methoxycarbonyl)phenyl]-2H-xanthene-2-iminium chloride
	Other names Rhodamine 123, EINECS 263-687-8, RH 123, LS-162564, C11190
Identifiers
CAS Number	62669-70-9 ;
3D model (JSmol)	Interactive image;
ChEMBL	ChEMBL176049 ;
ChemSpider	13726662 ;
ECHA InfoCard	100.057.879
EC Number	263-687-8;
PubChem CID	9929799;
UNII	1N3CZ14C5O ;
CompTox Dashboard (EPA)	DTXSID90910785 DTXSID00886503, DTXSID90910785 ;
	InChI InChI=1S/C21H17N2O3.ClH/c1-25-21(24)15-5-3-2-4-14(15)20-16-8-6-12(22)10-18(16)26-19-11-13(23)7-9-17(19)20;/h2-11H,22-23H2,1H3;1H/q+1;/p-1 Key: TUFFYSFVSYUHPA-UHFFFAOYSA-M ; InChI=1/C21H17N2O3.ClH/c1-25-21(24)15-5-3-2-4-14(15)20-16-8-6-12(22)10-18(16)26-19-11-13(23)7-9-17(19)20;/h2-11H,22-23H2,1H3;1H/q+1;/p-1 Key: TUFFYSFVSYUHPA-REWHXWOFAU;
	SMILES [Cl-].COC(=O)c4ccccc4c1c3ccc(N)cc3[o+]c2cc(N)ccc12;
Properties
Chemical formula	C21H17ClN2O3
Molar mass	380.824
Melting point	235 °C (455 °F; 508 K)
Solubility in ethanol	20 g/l
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H302
Precautionary statements	P264, P270, P301+P312, P330, P501
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Rhodamine 123 /ˈroʊdəmiːn/ is a chemical compound and a dye. It is often used as a tracer dye within water to determine the rate and direction of flow and transport. Rhodamine dyes fluoresce and can thus be detected easily and inexpensively with instruments called fluorometers. Rhodamine dyes are used extensively in biotechnology applications such as fluorescence microscopy, flow cytometry, fluorescence correlation spectroscopy and ELISA. Rhodamine fluorescence can also be used as a measure of membrane polarization in live cell assays both within mitochondria^[1]^[2] and with bacteria. This use relies on the fact that rhodamine 123 accumulates in membranes in a manner which is dependent on membrane polarization.^[3]

The absorption of rhodamine 123 peaks around 505 nm and luminescence is tunable around 560 nm when used as a laser dye.^[4] Its luminescence quantum yield is 0.90.^[5]

References

^ L. B. Chen. "Mitochondrial membrane potential in living cells."Annu Rev Cell Biol. 4 (1988) 155–181
^ Darzynkiewicz Z, Traganos F, Staiano-Coico L, Kapuscinski J, Melamed MR. (1982) Interaction of rhodamine 123 with living cells studied by flow cytometry. Cancer Res. Mar;42(3):799-806. PMID 7059978
^ M. Huang, A. K. S. Camara, D. F. Stowe, F. Qi, D. A. Beard. "Mitochondrial inner membrane electrophysiology assessed by rhodamine-123 transport and fluorescence" Annals of Biomedical Engineering. (2007) 35 (7)
^ Rhodamine 123
^ R. F. Kubin and A. N. Fletcher, "Fluorescence quantum yields of some rhodamine dyes." J. Luminescence 27 (1982) 455

v t e Dye lasers (liquid state)
Laser dyes	Coumarin Polyphenyl Fluorescein Rhodamine 6G Rhodamine B Rhodamine 123 Umbelliferone (Z)-Stilbene (E)-Stilbene Tetracene
Aspects	Tunable laser Excitation laser Liquid-crystal laser Organic laser Ormosil Active laser medium (gain medium) Adamantane Ring-dye laser Solid-state dye laser (SSDL)

References

See also