Sulforhodamine B
IUPAC name	2-(3-diethylamino-6-diethylazaniumylidene-xanthen-9-yl)-5-sulfo-benzenesulfonate
Identifiers
CAS number	3520-42-1 Y
PubChem	65191
EC number	220-025-2
SMILES	O=S(=O)(O)c4ccc(C=1c3c(OC=2C=1\C=C/C(=[N+](/CC)CC)/C=2)cc(cc3)N(CC)CC)c(c4)S([O-])(=O)=O
InChI	1/C27H30N2O7S2/c1-5-28(6-2)18-9-12-21-24(15-18)36-25-16-19(29(7-3)8-4)10-13-22(25)27(21)23-14-11-20(37(30,31)32)17-26(23)38(33,34)35/h9-17H,5-8H2,1-4H3,(H-,30,31,32,33,34,35)
InChI key	IOOMXAQUNPWDLL-UHFFFAOYAJ
Properties
Molecular formula	C27H30N2O7S2
Molar mass	558.666 g/mol
Y (what is this?)  (verify) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Sulforhodamine B or kiton red (C₂₇H₃₀N₂O₇S₂) is a fluorescent dye with uses spanning from laser-induced fluorescence (LIF) to the quantification of cellular proteins of cultured cells. The red, solid, water-soluble dye is primarily used as a polar tracer.

The dye has maximal absorbance at 585 nm light and maximal fluorescence emission at 607 nm light. It does not exhibit pH dependent absorption or fluorescence over the range of 3 to 10.^[1]

[edit] References

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