1,7-Dioxaspiro[4.4]nonane-2,6-dione, 8-(1,2-dihydroxyethyl)-9-hydroxy-4-(4-hydroxyphenyl)-, [5S-[5.alpha.(S*),8.alpha.(R*),9.beta.]]- 1,7-Dioxaspiro[4.4]nonane-2,6-dione, 8-(1,2-dihydroxyethyl)-9-hydroxy-4-(p-hydroxyphenyl)- 14225-07-1 Leucodrin NSC112845