. . . . "Xanthanol, 9-Hydroxyxanthene, 9-Xanthydrol, Xanthen-9-ol, 9-Xanthenol, Xanthydrol solution" . . "Xanthydrol" . "9H-Xanthen-9-ol" . . . . . . . . . "Xanthydrol" . . "xanthydrol" . .