3,6-Dihydroxy-9-(2-sulfophenyl)xanthylium betaine

1,1-diketospiro[benzo[c]oxathiole-3,9'-xanthene]-3',6'-diol ; 3',6'-dihydroxyspiro[3h-2,1-benzoxathiole-3,9'-xanthene]-1,1-dioxide ; 2-19-00-00413 (beilstein handbook reference) ; 3,6-dihydroxy-9-(2-sulfophenyl)xanthyliumbetaine ; spiro(3h-2,1-benzoxathiole-3,9'-(9h)xanthene)-3',6'-diol,1,1-dioxide ; sulfonfluorescein ; 1,1-dioxospiro[benzo[c]oxathiole-3,9'-xanthene]-3',6'-diol ; o-(3,6,9-trihydroxyxanthen-9-yl)-benzenesulfonicacigamma-sultone ; sulfonefluorescein ; sulphonefluorescein ; 1,1-dioxospiro[benzo[c][1,2]oxathiole-3,9'-xanthene]-3',6'-diol