Synonyms: 1,1'-Spirobi(1H-indene)-5,5',6,6',7,7'-hexol, 2,2',3,3'-tetrahydro-3,3,3',3'-tetramethyl-;1,1'-spirobi[1H-indene]-5,5',6,6',7,7'-hexol, 2,2',3,3'-tetrahydro-3,3,3',3'-tetramethyl-;3,3,3',3'-Tetramethyl-2,2',3,3'-tetrahydro-1,1'-spirobi[indene]-5,5',6,6',7,7'-hexol