USP7-IN-7 (compound 124) is a USP7 inhibitor with an IC 50 value ＜10 nM. USP7-IN-7 shows cytotoxicity against p53-mutant cancer cell lines, p53 wild-type blood cancer and neuroblastoma cell lines with low nanomolar values. USP7-IN-7 can be used for cancer research. In Vitro USP7-IN-7 (0-1 μM) shows cytotoxicity against p53 wild-type blood cancer cell lines with CC 50 values of 0.2, 0.2, 0.4 and 0.1 μM for M07e, OCI-AML5, MOLM13 and MM.IS, respectively. USP7-IN-7 (0-2 μM) shows cytotoxicity against p53 wild-type neuroblastoma cell lines with CC 50 values of 1.9, 0.6 and 0.5 μM for SH-SY5Y, CHP-134 and NB-1, respectively. USP7-IN-7 (0-25 μM) shows cytotoxicity against p53-mutant cancer cell lines with CC 50 values of 0.5, 0.2 and 0.2 μM for H526, LA-N-2 and SK-N-DZ, respectively. MCE has not independently confirmed the accuracy of these methods. They are for reference only.