英文别名Butylphthalide Impurity 25; n-Butylphthalide-002; 3-Butylphthalide Impurity 2; Butyphthalide impurity4; 1(3H)-Isobenzofuranone, 3-methylene-; 3-methylidene-2-benzofuran-1-one; 3-methylidenephthalide; 3-methylidene-3H-isobenzofuran-1-one; 3-methylene-3H-isobenzofuran-1-one; 1(3H)-Isobenzofuranone,3-methylene; 3-methylene-1(3H)-isobenzofuranone; 3-methylidene-2-benzofuran-1(3H)-one; (Z)-3-methylenephthalide 
