羟甲香豆素，化学物质，为白色至类白色的结晶性粉末，无臭，无味。本品为4-甲基-7-羟基-2H-1-苯并吡喃-2- 酮。按干燥品计算，含C10H8O3应为98.0%～102.0 %。7-Hydroxy-4-methylcoumarin~Hymecromone~4-MU; Hymecromone; Coumarin 4; 4-Methyl-7-hydroxycoumarin; 4-MU; 7-hydroxy-4-methyl-2，h-1-benzo-pyran-2-one; 7-hydroxy-4-methyl-2-oxo-3-chromene; 7-hydroxy-4-methylbenzpyrone; bilcolic; bilicante; beta-methylumbelliferone; cantabilin; eurogae; imechromone; medilla