2643-01-8 NSC4583 Naphtho[2,3-c]furan-1(3H)-one, 4-(3,4-dihydroxyphenyl)-3a,4,9,9a-tetrahydro-6,7-dihydroxy-, [3aR-(3a.alpha.,4.alpha.,9a.alpha.)]- Naphtho[2,3-c]furan-1(3H)-one, 4-(3,4-dihydroxyphenyl)-3a,4,9,9a-tetrahydro-6,7-dihydroxy-, stereoisomer