brasilin
Bras"i*lin, Bras"i*lein, n. [Cf. F. brésiline. See 2d Brazil.] (Chem.) Defn: A substance, C16H14O5, extracted from brazilwood as a yellow crystalline powder which is white when pure. It is colored intensely red by alkalies on exposure to the air, being oxidized to bra*sil"e*in, C16H12O5, to which brazilwood owes its dyeing properties.