9-amino-1,2,3,4-tetrahydroacridin-4-ol

5-(2-oxo-1H-indol-3-ylidene)imidazolidine-2,4-dione

1-(二乙基氨基)甲基-1H-吲哚-2,3-二酮

2-[4-(1,3-benzoxazol-2-yl)phenoxy]-N-[(E)-(1-methyl-2-oxoindol-3-ylidene)amino]acetamide

靛蓝