1H-​Indole-​2,​3-​dione, 5-​chloro-​1-​[(2,​5-​dichlorophenyl)​methyl]​-​, 3-​(O-​acetyloxime)

LDN 57444 is an inhibitor of UCH-L1, an enzyme expressed by certain lung tumor-derived cell lines, suggesting that this enzyme plays a role in tumor progression.