Dictionary entry

Murexan

Webster's Dictionary 1913

Mu‐rex″an (?), n. [From Murexide.] (Chem.) 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.