Fluo-2 (potassium)

Fluo-2 potassium is a cell-impermeant fluorescent calcium indicator. Fluo-2 potassium binds calcium (Kd: 0.37 μM) with excitation/emission wavelengths of 493/518 nm, respectively[1].

C36H27K5N2O13

891.1

O=C1C=CC2=C(C3=C(OC2=C1)C=C(O[K])C=C3)C4=CC(OCCOC5=CC(C)=CC=C5N(CC(O[K])=O)CC(O[K])=O)=C(C=C4)N(CC(O[K])=O)CC(O[K])=O

Fluorescent Dye

Room temperature