(BI-1,4-CYCLOHEXADIEN-1-YL)-3,3',6,6'-TETRONE, 4,4'-DIMETHYL-2,2',5,5'-TETRAHYDR (Bi-1,4-cyclohexadien-1-yl)-3,3',6,6'-tetrone, 4,4'-dimethyl-2,2',5,5'-tetrahydroxy-, potassium salt 89519-98-2 Oosporein potassium Potassium oosporein