Category:Murexan

Mu*rex"an, n. Etym: [From Murexide.] (Chem.)

Defn: A complex nitrogenous substance obtained from murexide, alloxantin, and other ureids, as a white, or yellowish, crystalline which turns red on exposure to the air; -- called also uramil, dialuramide, and formerly purpuric acid.