Home JAK/STAT -Epigenetics -Angiogenesis -Stem Cells & Wnt JAK JAK2 Selective Inhibitors
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JAK2 Selective Inhibitors

Catalog No. Product Name Information Selective / Pan IC50 / Ki
S1349 SC99 SC99 is an orally active, selective STAT3 inhibitor targeting JAK2-STAT3 pathway by docking into the ATP-binding pocket of JAK2, also inhibits phosphorylation of JAK2and STAT3 with no effects on the other kinases associated with STAT3 signaling. Selective
S5588 Creatine Creatine (Methylguanidoacetic acid) is a nitrogenous organic acid that occurs naturally in vertebrates. It facilitates the recycling of adenosine triphosphate (ATP) primarily in muscle and brain tissue.Creatine can inhibits the JAK-STAT1 signal transmission by inhibiting the interaction of IFN-γ receptors with JAK2 in an ATP-independent manner, thereby inhibiting downstream pro-inflammatory gene expression. Selective
S8152 Cucurbitacin I

Cucurbitacin-I (Elatericin B, JSI 124, NSC 521777), a natural cell-permeable triterpenoid isolated from Cucurbitaceae, is a novel selective inhibitor of JAK2/STAT3.

 Selective
S3267 Kaempferol-3-O-rutinoside Kaempferol-3-O-rutinoside (Nicotiflorin, Nikotoflorin, Kaempferol 3-O-β-rutinoside), a flavonoid extracted from Carthamus tinctorius, alters the shape and structure of injured neurons, decreases the number of apoptotic cells, down-regulates expression of p-JAK2, p-STAT3, caspase-3, and Bax and decreases Bax immunoredactivity, and increases Bcl-2 protein expression and immunoreactivity. Selective
S0871 Gusacitinib (ASN-002) Gusacitinib (ASN-002) is a novel and potent dual inhibitor of spleen tyrosine kinase (SYK) and Janus kinases (JAK) with IC50 values of 5-46 nM in biochemical assays. Selective
S5902 1,2,3,4,5,6-Hexabromocyclohexane 1,2,3,4,5,6-Hexabromocyclohexane (NSC7908) is a potent inhibitor of JAK2 tyrosine kinase autophosphorylation with IC50 value to be estimated in low micromolar range. Selective
S0918 Ginkgolic acid C17:1 Ginkgolic acid C17:1 (GAC 17:1) inhibits constitutive activation of STAT3 through the abrogation of upstream JAK2 and Src. Ginkgolic acid C17:1 can induce the substantial expression of PTEN and SHP-1. Ginkgolic acid C17:1 induces apoptosis of tumor cells. Selective
S2162 AZD1480 AZD1480 is a novel ATP-competitive JAK2 inhibitor with IC50 of 0.26 nM in a cell-free assay, selectivity against JAK3 and Tyk2, and to a smaller extent against JAK1. Phase 1. Selective JAK2, IC50: 0.26 nM
S2214 AZ 960 AZ 960 is a novel ATP competitive JAK2 inhibitor with IC50 and Ki of <3 nM and 0.45 nM, 3-fold selectivity of AZ960 for JAK2 over JAK3. AZ 960 induces apoptosis and growth arrest. Selective JAK2, IC50: <3 nM; JAK2, Ki: 0.45 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. Selective JAK2, IC50: ~0.5 nM
S7144 BMS-911543 BMS-911543 is a potent and selective inhibitor of JAK2 with IC50 of 1.1 nM, ~350-, 75- and 65-fold selective to JAK1, JAK3 and TYK2, respectively. Phase 1/2. Selective JAK2, IC50: 1.1 nM
S2806 CEP-33779 CEP33779 is a selective JAK2 inhibitor with IC50 of 1.8 nM, >40- and >800-fold versus JAK1 and TYK2. Selective JAK2, IC50: 1.8 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. Selective JAK2, IC50: 2.2 nM
S2736 Fedratinib (TG101348) Fedratinib (SAR302503, TG101348) is a selective inhibitor of JAK2 with IC50 of 3 nM in cell-free assays, 35- and 334-fold more selective for JAK2 versus JAK1 and JAK3. Fedratinib also inhibits FMS-like tyrosine kinase 3 (FLT3) and RET (c-RET) with IC50 of 15 nM and 48 nM, respectively. Fedratinib has potential antineoplastic activity. Fedratinib inhibits proliferation and induces apoptosis. Phase 2. Selective JAK2, IC50: 3 nM; JAK2 (V617F), IC50: 3 nM
S2692 TG101209 TG101209 is a selective JAK2 inhibitor with IC50 of 6 nM, less potent to Flt3 and RET (c-RET) with IC50 of 25 nM and 17 nM in cell-free assays, ~30-fold selective for JAK2 than JAK3, sensitive to JAK2V617F and MPLW515L/K mutations. Selective JAK2, IC50: 6 nM
S7002 Zotiraciclib Zotiraciclib (SB1317; TG02) is a novel small molecule potent CDK/JAK2/FLT3 inhibitor, emerged with potent CDK (IC50 against CDKs 1, 2 and 9 = 9, 5 and 3 nM, respectively), FLT3 (IC50 = 19 nM) and JAK2 (IC50 = 19 nM) potency. Selective JAK2, IC50: 19 nM
S2796 WP1066 WP1066 is a novel inhibitor of JAK2 and STAT3 with IC50 of 2.30 μM and 2.43 μM in HEL cells; shows activity to JAK2, STAT3, STAT5, and ERK1/2 not JAK1 and JAK3. WP1066 induces apoptosis. Phase 1. Selective JAK2, IC50: 2.3 μM
S7259 FLLL32 FLLL32 is a potent JAK2/STAT3 inhibitor with IC50 of <5 μM. FLLL32 inhibits the induction of STAT3 phosphorylation by IFNα and IL-6 in breast cancer cells. Selective JAK2, IC50: <5 μM
S0391 TG-89 TG-89 is an inhibitor of JAK2 with IC50 of 11.2 μM. Selective JAK2, IC50: 11.2 μM
S2407 Curcumol Curcumol is a pure monomer isolated from Rhizoma Curcumaeis with antitumor activities. Selective
S6919 Brevilin A Brevilin A (6-O-Angeloylplenolina), a sesquiterpene lactone isolated from Centipeda minima, is a selective inhibitor of STAT3 and attenuates the JAKs activity by blocking the JAKs tyrosine kinase domain JH1. Brevilin A induces apoptosis and autophagy of colon adenocarcinoma cell CT26 via mitochondrial pathway and PI3K/AKT/mTOR inactivation. Selective
S7650 Peficitinib Peficitinib is an orally bioavailable JAK inhibitor. Phase 3. Selective
S6524 NSC 42834 NSC42834 (JAK2 Inhibitor V, Z3) is an inhibitor of the autophosphorylation of wild type and V617F mutant forms of JAK2 with IC50 values between 10 and 30 μM. Selective
S1143 AG-490 (Tyrphostin B42) AG-490 (Tyrphostin B42, Zinc02557947) is an inhibitor of EGFR with IC50 of 0.1 μM in cell-free assays, 135-fold more selective for EGFR versus ErbB2, also inhibits JAK2 with no activity to Lck, Lyn, Btk, Syk and Src. Selective
S6899 Licochalcone D Licochalcone D (Lico D, LCD, LD), a flavonoid isolated from a Chinese medicinal plant Glycyrrhiza inflata, has antioxidant, anti-inflammatory and anti-cancer properties. Licochalcone D inhibit phosphorylation of NF-κB p65 in LPS signaling pathway. Licochalcone D inhibits JAK2, EGFR and Met (c-Met) activities and induces ROS-dependent apoptosis. Licochalcone D also induces caspases activation and poly (ADP-ribose) polymerase (PARP) cleavage. Selective
S7119 Go6976 Go6976 (PD406976) is a potent PKC inhibitor with IC50 of 7.9 nM, 2.3 nM, and 6.2 nM for PKC (Rat brain), PKCα, and PKCβ1, respectively. Also a potent inhibitor of JAK2 and Flt3. Selective
S7137 GLPG0634 analogue GLPG0634 analogue 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. Selective
S2179 Gandotinib (LY2784544) Gandotinib (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 JAK2, IC50: 3 nM; JAK2, Ki: 0.288 nM; JAK2 (V617F), Ki: 0.245 nM
S6789 JAK Inhibitor I (Pyridone 6) JAK Inhibitor I (Pyridone 6, CMP 6, Compound 6) is a pan-JAK inhibitor with IC50s of 1 nM, 1 nM, 5 nM and 15 nM for JAK2, TYK2, JAK3 and JAK1, respectively. Pan JAK2, IC50: 1 nM
S1134 AT9283 AT9283 is a potent JAK2/3 inhibitor with IC50 of 1.2 nM/1.1 nM in cell-free assays; also potent to Aurora A/B, Abl1(T315I). Pan JAK2, IC50: 1.2 nM
S8802 Delgocitinib (JTE-052) Delgocitinib (JTE-052) is a specific  JAK inhibitor with IC50s of 2.8, 2.6, 13 and 58 nM for JAK1, JAK2, JAK3 and Tyk2, respectively. Pan JAK2, IC50: 2.6 nM
S1378 Ruxolitinib Ruxolitinib is the first potent, selective, JAK1/2 inhibitor to enter the clinic with IC50 of 3.3 nM/2.8 nM in cell-free assays, >130-fold selectivity for JAK1/2 versus JAK3. Ruxolitinib kills tumor cells through toxic mitophagy. Ruxolitinib induces autophagy and enhances apoptosis. Pan JAK2, IC50: 2.8 nM
S5243 Ruxolitinib Phosphate Ruxolitinib Phosphate (INCB018424, INC424) is the phosphate salt form of Ruxolitinib. Ruxolitinib is the first potent, selective, JAK1/2 inhibitor to enter the clinic with IC50 of 3.3 nM/2.8 nM in cell-free assays, >130-fold selectivity for JAK1/2 versus JAK3. Ruxolitinib kills tumor cells through toxic mitophagy. Ruxolitinib induces autophagy and enhances apoptosis. Pan JAK2, IC50: 2.8 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 JAK2, IC50: 2.8 nM
S2851 Baricitinib Baricitinib is a selective JAK1 and JAK2 inhibitor with IC50 of 5.9 nM and 5.7 nM in cell-free assays, ~70 and ~10-fold selective versus JAK3 and Tyk2, no inhibition to c-Met and Chk2. Baricitinib is found to reduce or interrupt the passage of the virus into target cells and is used in the treatment research for COVID-19. Phase 3. Pan JAK2, IC50: 5.7 nM
S5754 Baricitinib phosphate Baricitinib phosphate (INCB-028050, LY-3009104) is a selective JAK1 and JAK2 inhibitor with IC50 of 5.9 nM and 5.7 nM, ~70 and ~10-fold selective versus JAK3 and Tyk2, no inhibition to c-Met and Chk2. Baricitinib is found to reduce or interrupt the passage of the virus into target cells and is used in the treatment research for COVID-19. Pan JAK2, IC50: 5.7 nM
S3566 Cerdulatinib (PRT062070) Cerdulatinib (PRT062070, PRT2070) 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 inhibits19 other tested kinases with IC50 less than 200 nM. Pan JAK2, IC50: 6 nM
S7634 Cerdulatinib (PRT062070) hydrochloride Cerdulatinib (PRT-062070, PRT2070) hydrochloride 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 JAK2, IC50: 6 nM
S7541 Decernotinib (VX-509) Decernotinib (VX-509) is a potent and selective JAK3 inhibitor with Ki of 2.5 nM, >4-fold selectivity over JAK1, JAK2, and TYK2, respectively. Phase 2/3. Pan JAK2, Ki: 13 nM
S2219 Momelotinib (CYT387) Momelotinib (CYT387, LM-1149 , CYT11387) is an ATP-competitive inhibitor of JAK1/JAK2 with IC50 of 11 nM/18 nM, ~10-fold selectivity versus JAK3. Momelotinib (CYT387) induces apoptosis and autophagy. Phase 3. Pan JAK2, IC50: 18 nM
S8195 Oclacitinib maleate Oclacitinib maleate (PF-03394197) is a novel inhibitor of JAK family members with IC50 ranging from 10 to 99 nM and JAK1-dependent cytokines with IC50 ranging from 36 to 249 nM. It does not inhibit a panel of 38 non-JAK kinases. Pan JAK2, IC50: 18nM
S8057 Pacritinib Pacritinib 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 in cell-free assays, respectively. Phase 3. Pan JAK2, IC50: 23 nM; JAK2 (V617F), IC50: 19 nM
S2789 Tofacitinib Tofacitinib is a novel inhibitor of JAK3 with IC50 of 1 nM in cell-free assays, 20- to 100-fold less potent against JAK2 and JAK1. Tofacitinib inhibits the expression of antiapoptotic BCL-A1 and BCL-XL in human plasmacytoid dendritic cells (PDC) and induced PDC apoptosis. Pan JAK2, IC50: 20 nM
S5001 Tofacitinib (CP-690550) Citrate Tofacitinib citrate (CP-690550, Tasocitinib) is a novel inhibitor of JAK with IC50 of 1 nM, 20 nM and 112 nM against JAK3, JAK2, and JAK1, respectively. Tofacitinib citrate has anti-infection activity. Pan JAK2, IC50: 20 nM
S0437 SAR-20347 SAR-20347 is a potent inhibitor of TYK2, JAK1, JAK2 and JAK3 with IC50 of 0.6 nM, 23 nM, 26 nM and 41 nM, respectively. SAR-20347 inhibits TYK2- and JAK1-mediated IL-12 and IFN-α signaling. Pan JAK2, IC50: 26 nM
S0374 GDC046 GDC046 (Compound 3) is a potent, selective, and orally bioavailable inhibitor of TYK2 with Ki of 4.8 nM, 83.8 nM, 27.6 nM and 253 nM for TYK2, JAK1, JAK2, and JAK3, respectively. Pan JAK2, Ki: 27.6 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 JAK2, IC50: 28 nM
S9676 Ropsacitinib (PF-06826647) Ropsacitinib (PF-06826647, Tyk2-IN-8, compound 10) is a selective and orally administered inhibitor of tyrosine kinase 2 (TYK2) with IC50 of 17 nM for binding to TYK2 catalytically active JH1 domain. PF-06826647 (Tyk2-IN-8, compound 10) also inhibits JAK1 and JAK2 with IC50 of 383 nM and 74 nM, respectively. PF-06826647 (Tyk2-IN-8, compound 10) is used in the treatment of psoriasis (PSO). Pan JAK2, IC50: 74 nM
S8804 Brepocitinib (PF-06700841) Brepocitinib (PF-06700841, PF-841) is a potent inhibitor of Tyk2 and Jak1 with IC50s of 23 nM, 17 nM, 77 nM for Tyk2, Jak1 and Jak2 respectively. It has appropriate in-family selectivity against JAK2 and JAK3. Pan JAK2, IC50: 77 nM
S8162 Upadacitinib Upadacitinib is a selective JAK1 inhibitor which demonstrates activity against JAK1 (0.045 μM) and JAK2 (0.109 μM), with > 40 fold selectivity over JAK3 (2.1 μM) and 100 fold selectivity over TYK2 (4.7 μM) as compared to JAK1. Pan JAK2, IC50: 109 nM
S8684 Selective JAK3 inhibitor 1 Selective JAK3 inhibitor 1 is an irreversible JAK3 inhibitor with Ki values of 0.07 nM, 320 nM, 740 nM for JAK3, JAK1 and JAK2 respectively. It is also selective over the other kinases possessing a cysteine in the same region as JAK3, such as BMX, EGFR, ITK, and BTK. Pan JAK2, Ki: 740 nM
S8765 Abrocitinib (PF-04965842) Abrocitinib (PF-04965842) is a potent JAK1 inhibitor with IC50s of 29 nM, 803 nM, > 10 000 nM and 1250 nM for JAK1, JAK2, JAK3 and tyrosine kinase (TYK) 2, respectively. Pan JAK2, IC50: 803 nM
S5917 Solcitinib Solcitinib (GLPG0778, GSK2586184) is an inhibitor of JAK1 with an IC50 of 8-9 nM, and shows 11-, 55- and 23-fold selectivity over JAK2, JAK3 and TYK2, respectively. Pan