1H-吲哚-2-羧酸肼

1H-indole-2-carboxylic acid N2-formyl-hydrazide

1,2-dihydro-1-oxo-1,2,4-triazino[4,5-a]indole

甲酸

[1,2,4]triazino[4,5-a]indol-1-ylhydrazine