Aclacinomycin A (Aclarubicin) hydrochloride is a fluorescent molecule and the first described non-peptidic inhibitor showing discrete specificity for the CTRL (chymotrypsin-like) activity of the 20S proteasome. Aclacinomycin A hydrochloride is also a dual inhibitor of topoisomerase I and II.
DYRKs-IN-1 has antitumor activity. DYRKs-IN-1 is a potent DYRKs (Dual-specificity tyrosine-phosphorylation-regulated kinases) inhibitor with IC50s of 9 nM and 5 nM for DYRK1B and DYRK1A, respectively.
LDN-192960 hydrochloride is an inhibitor of Dual-specificity Tyrosine-regulated Kinase 2 (DYRK2) and Haspin with IC50s of 48 nM and 10 nM, respectively.
MLS-0437605 is a potent and selective inhibitor of dual-specificity phosphatase 3 (DUSP3), with an IC50 of 3.7 μM. It exhibits higher selectivity towards DUSP3 in comparison to DUSP22 and other protein tyrosine phosphatases (PTPs).