乙酰乙酸甲酯

11-methyl-9-(2-oxo-2H-1-benzopyran-3-yl)-8-oxa-10-azatricyclo[7.3.1.02,7]trideca-2,4,6,11-tetraene-12-carboxylic acid

丙二酰胺

尿素

氰乙酰胺