AsCy3;Bis(dithiarsolanyl)-bis(sulfobutyl) Cyanine 3;5-(1,3,2-Dithiarsolan-2-yl)-2-[3-[5-(1,3,2-dithiarsolan-2-yl)-1,3-dihydro-3,3-diMethyl-1-(4-sulfobutyl)-2H-indol-2-ylidene]-1-propen-1-yl]-3,3-diMethyl-1-(4-sulfobutyl)-3H-indoliuM Inner Salt
A red Cy3-based biarsenical fluorescent probe targeted to a complementary binding peptide. AsCy3 has good photostability, low pH sensitivity, high absorbance, and good quantum yield. This new probe provides a FRET partner to biarsenical dye FlAsH, making this discovery an important step toward a whole toolkit of colored probes directed to different small peptide motifs.
