X8A1N1T1H4O1N1E1S1
19 points
XANTHONES is validvalid
XANTHONE, a chemical compound [n]
XANTHONE, a ketone analogue of xanthene which forms the basis of various natural pigments [n]
XANTHONE, a chemical compound [n]
XANTHONE, a ketone analogue of xanthene which forms the basis of various natural pigments [n]