ars

Alizarin Red S sodium (ARS sodium) is an anthraquinone dye widely used to evaluate calcium deposits in cell culture[1].

Alizarin Red S (ARS) is an anthraquinone derivative dye that exhibits orange-red fluorescence when its functional groups form coordination bonds with cations such as calcium ions through oxygen atoms. It is used to screen calcium compounds in synovial fluid, detect osteoblast differentiation, and stain bones within mice. Excitation/emission wavelength: 500/570 nm.

Arsenazo I is a calcium-sensitive, metallochromic dye used as reagent.

Arsenazo III is a dye used to detect micromolar concentrations of ionized Ca2+ and for determining thorium, zirconium, uranium, and rare earth elements [1] [2].