3172-49-4

PYROGALLOL RED PYROGALLIC ACID PYROGALLIC ACID RED 1,2,3-BENZENETRIOL RED PYROGALLOL RED-LACTONE PYROGALLOSULFONPHTHALEIN PYROGALLOLSULFONPHTHALEIN PYROGALLOLSULFONEPHTHALEIN 1,2,3-TRIHYDROXYBENZENE RED pyrogallolsulphonephthalein 2-(6H-6-oxo-3,4,5-trihydroxyxanthen-9-yl)benzenesulphonic acid 1,1-dioxospiro[benzo[c]oxathiole-3,9'-xanthene]-3',4',5',6'-tetrol 1,1-diketospiro[benzo[c]oxathiole-3,9'-xanthene]-3',4',5',6'-tetrol 2-(3,4,5,6,9-PENTAHYDROXYXANTHEN-9-YL)BENZENESULFONIC ACID-9-LACTONE 1,1-dioxospiro[benzo[c][1,2]oxathiole-3,9'-xanthene]-3',4',5',6'-tetrol