1,4-Naphthalenedione, 5,8-dihydroxy-2,7-dimethoxy- 1,4-Naphthoquinone, 5,8-dihydroxy-2,7-dimethoxy- 2808-46-0 5,8-Dihydroxy-2,7-dimethoxy-1,4-naphthoquinone NAPHTHOQUINONE, 5,8-DIHYDROXY-2,7-DIMETHOXY NSC305977