1-Hydroxy-3,7-dimethoxyxanthone 13379-35-6 5-18-04-00497 (Beilstein Handbook Reference) 9H-Xanthen-9-one, 1-hydroxy-3,7-dimethoxy- 9H-Xanthene-9-one, 3,7-dimethoxy-1-hydroxy- BRN 0263672 CCRIS 2244 Xanthen-9-one, 3,7-dimethoxy-1-hydroxy-