JAK3 Selective Inhibitors

Catalog No. Product Name Information Selective / Pan IC50 / Ki
S2789 Tofacitinib (CP-690550,Tasocitinib)

Tofacitinib (CP-690550,Tasocitinib) is a novel inhibitor of JAK3 with IC50 of 1 nM, 20- to 100-fold less potent against JAK2 and JAK1.

Selective JAK3, IC50: 1 nM
S5001 Tofacitinib (CP-690550) Citrate

Tofacitinib (CP-690550) Citrate is a novel inhibitor of JAK3 with IC50 of 1 nM, 20- to 100-fold less potent against JAK2 and JAK1.

Selective JAK3, IC50: 1 nM
S8004 ZM 39923 HCl

ZM 39923 HCl is an JAK1/3 inhibitor with pIC50 of 4.4/7.1, almost no activity to JAK2 and modestly potent to EGFR; also found to be sensitive to transglutaminase.

Selective JAK3, pIC50: 7.1
S2867 WHI-P154

WHI-P154 is a potent JAK3 inhibitor with IC50 of 1.8 μM, no activity against JAK1 or JAK2, also inhibits EGFR, Src, Abl, VEGFR and MAPK, prevents Stat3, but not Stat5 phosphorylation.

Selective JAK3, IC50: 1.8 μM
S1134 AT9283

AT9283 is a potent JAK2/3 inhibitor with IC50 of 1.2 nM/1.1 nM; also potent to Aurora A/B, Abl(T315I). Phase 2.

Pan JAK3, IC50: 1.1 nM
S7634 Cerdulatinib (PRT062070, PRT2070)

Cerdulatinib (PRT-062070) is an oral active, multi-targeted tyrosine kinase inhibitor with IC50 of 12 nM/6 nM/8 nM/0.5 nM and 32 nM for JAK1/JAK2/JAK3/TYK2 and Syk, respectively. Also inhibits 19 other tested kinases with IC50 less than 200 nM.

Pan JAK3, IC50: 8 nM
S2686 NVP-BSK805 2HCl

NVP-BSK805 2HCl is a potent and selective ATP-competitive JAK2 inhibitor with IC50 of 0.5 nM,>20-fold selectivity towards JAK1, JAK3 and TYK2.

Pan JAK3, IC50: 18.68 nM
S2179 LY2784544

LY2784544 is a potent JAK2 inhibitor with IC50 of 3 nM, effective in JAK2V617F, 8- and 20-fold selective versus JAK1 and JAK3. Phase 2.

Pan JAK3, IC50: 48.0 nM
S2219 Momelotinib (CYT387)

Momelotinib (CYT387) is an ATP-competitive inhibitor of JAK1/JAK2 with IC50 of 11 nM/18 nM, ~10-fold selectivity versus JAK3. Phase 3.

Pan JAK3, IC50: 155 nM
S2692 TG101209

TG101209 is a selective JAK2 inhibitor with IC50 of 6 nM, less potent to Flt3 and RET with IC50 of 25 nM and 17 nM, ~30-fold selective for JAK2 than JAK3, sensitive to JAK2V617F and MPLW515L/K mutations.

Pan JAK3, IC50: 169 nM
S7036 XL019

XL019 is a potent and selective JAK2 inhibitor with IC50 of 2.2 nM, exhibiting >50-fold selectivity over JAK1, JAK3 and TYK2. Phase 1.

Pan JAK3, IC50: 214.2 nM
S2902 S-Ruxolitinib (INCB018424)

S-Ruxolitinib is the chirality of INCB018424, which is the first potent, selective, JAK1/2 inhibitor to enter the clinic with IC50 of 3.3 nM/2.8 nM, >130-fold selectivity for JAK1/2 versus JAK3. Phase 3.

Pan JAK3, IC50: 428 nM
S8057 Pacritinib (SB1518)

Pacritinib (SB1518) is a potent and selective inhibitor of Janus Kinase 2 (JAK2) and Fms-Like Tyrosine Kinase-3 (FLT3) with IC50s of 23 and 22 nM, respectively. Phase 3.

Pan JAK3, IC50: 520 nM
S7605 Filgotinib (GLPG0634)

Filgotinib (GLPG0634) is a selective JAK1 inhibitor with IC50 of 10 nM, 28 nM, 810 nM, and 116 nM for JAK1, JAK2, JAK3, and TYK2, respectively. Phase 2.

Pan JAK3, IC50: 810 nM