异靛蓝

1,2,3-三氯苯

N-phenyl-2-thio-oxalomonoimidic acid-2-amid-1-anilide

N-(3-oxo-3H-indol-2-yl)-N-phenyl-benzamide

2,2'-diacetoxy-1,1'-dinitroso-1,2,1',2'-tetrahydro-[2,2']biindolyl-3,3'-dione