CAS 77-08-7 appears in our catalog under these names: 5,5',6,6'-Tetrahydroxy-3,3,3',3'-tetramethyl-1,1'-spirobisin, 5,5',6,6'-Tetrahydroxy-3,3,3',3'-tetramethyl-1,1'-spirobiindane, >96.0%(HPLC)(T), AI 3-16787 97%, 1,1'-Spirobi[1H-indene]-5,5',6,6'-tetrol, 2,2',3,3'-tetrahydro-3,3,3',3'-tetramethyl-, 97%, 97%, 3,3,3',3'-TETRAMETHYL-1,1'-SPIROBISINDA&. Offered by: Thermo Scientific (Alfa Aesar), TCI, Ambeed, Chemat, Sigma-Aldrich. Available pack sizes: 50g, 250g, 25g, 5g, 100g, 500g, 1000g, 10g.