2,7-Dichlorofluorescein

Dichlorofluorescein, 2-(2,7-dichloro-6-hydroxy-3-oxo-3H-xanthen-9-yl)benzoic acid; C₂₀H₁₀Cl₂O₅ = 401.2 (76-54-0)

Yellowish-brown or yellow-orange powder, slightly soluble in water, freely soluble in ethanol (96%) and in dilute solutions of alkali hydroxides giving a solution showing a yellowish-green fluorescence.