1,3-dihydroxy-1,3-dihydro-indol-2-one

3-hydroxy-3-(1-methyl-4-oxopiperidin-3-yl)indolin-2-one

3-羟基-3-(2-氧代-2-苯基乙基)-1,3-二氢-2H-吲哚-2-酮

1,3-二氢-3-羟基-3-(2-氧代丙基)-2H-吲哚-2-酮

1-乙酰基靛红