3′,6′-Dihydroxy-1′-isothiocyanato-3H-spiro[2-benzofuran-1,9′-xanthen]-3-one

3′,6′-Dihydroxy-1′-isothiocyanato-3H-spiro[2-benzofuran-1,9′-xanthen]-3-on

3′,6′-Dihydroxy-1′-isothiocyanato-3H-spiro[2-benzofuran-1,9′-xanthen]-3-one

3′,6′-Dihydroxy-1′-isothiocyanato-3H-spiro[2-benzofuran-1,9′-xanthen]-3-one

Spiro[isobenzofuran-1(3H),9′-[9H]xanthen]-3-one, 3′,6′-dihydroxy-1′-isothiocyanato-

fluoresceine isothiocyanate