JAK3 Covalent Inhibitor-1 is a compound characterized by its potent and selective inhibition of Janus kinase 3 (JAK3), possessing an IC50 of 11 nM and demonstrating a 246-fold selectivity compared to other JAKs.
Ritlecitinib, also known as PF-06651600, is a potent and selective JAK3 inhibitor. PF-06651600 is a potent and low clearance compound with demonstrated in vivo efficacy. The favorable efficacy and safety profile of this JAK3-specific inhibitor PF-06651600 led to its evaluation in several human clinical studies. JAK3 was among the first of the JAKs targeted for therapeutic intervention due to the strong validation provided by human SCID patients displaying JAK3 deficiencies.
Tofacitinib maleate, also known as tasocitinib, CP-690550, is a Janus kinase (JAK) inhibitor. Tofacitinib maleate modulates the signaling pathway at the point of JAKs, preventing the phosphorylation and activation of STATs. JAK enzymes transmit cytokine signaling through pairing of JAKs (e.g., JAK1 JAK3, JAK1 JAK2, JAK1 TyK2, JAK2 JAK2). Tofacitinib maleate inhibited the in vitro activities of JAK1 JAK2, JAK1 JAK3, and JAK2 JAK2 combinations with IC50 of 406, 56, and 1377 nM, respectively.
Tofacitinib HCl, also known as tasocitinib, CP-690550, is a Janus kinase (JAK) inhibitor. Tofacitinib HCl modulates the signaling pathway at the point of JAKs, preventing the phosphorylation and activation of STATs. JAK enzymes transmit cytokine signaling through pairing of JAKs (e.g., JAK1 JAK3, JAK1 JAK2, JAK1 TyK2, JAK2 JAK2). Tofacitinib HCl inhibited the in vitro activities of JAK1 JAK2, JAK1 JAK3, and JAK2 JAK2 combinations with IC50 of 406, 56, and 1377 nM, respectively.