Lomonitinib is a highly potent and selective pan-FLT3/IRAK4 inhibitor with antitumor activity. Lomonitinib is promising for research of myeloid leukemia.

HSN748 is a Ponatinib, and exhibits inhibitory activity against heparanase. Pixatimod free acid binds to the S1 receptor binding domain (RBD) of the SARS-CoV-2 virus, that inhibits SARS-CoV-2 isolate strains with EC50 of 2.4-13.8 µg/mL. Pixatimod free acid is an agonist for TLR9 signaling pathway, enhances the activity of dendritic cells (DCs), activates natural killer cells, and exhibits immunomodulatory and anti-tumor activities.

FW-1 is a type I inhibitor for FLT3 with IC50 of ca. 1 μM. FW-1 exhibits cytotoxicity in FLT3 mutated AML cell. FW-1 arrests the cell cycle at G0/G1 phase, and induces apoptosis in cell MV4-11 and MOLM-13.

Clifutinib (Compound 9e) is an orally active and selective internal tandem duplication mutation of FMS-like tyrosine kinase 3 (FLT3-ITD) inhibitor with an IC50 value of 15.1 nM. Clifutinib inhibits the activity of FLT3-ITD kinase and blocks the downstream RAS/MAPK, PI3K/AKT, and JAK/STAT5 signaling pathways of FLT3. Clifutinib induces apoptosis of acute myeloid leukemia (AML) cells with FLT3-ITD mutations. Clifutinib is promising for research of relapsed/refractory FLT3-ITD-positive acute myeloid leukemia.

CHEMBL4444839 is an inhibitor of FLT3 and can be used in the research of acute myeloid leukemia (AML).

CG-3-246 is a dual inhibitor of FLT3/BCL-2, with the Kds of 63 and 4.25 nM, respectibely. CG-3-246 plays an important role in acute myeloid leukemias research.

ATH686 (ATH-686) is a potent and selective, second-generation inhibitor of mutant FLT3 protein kinase.

MAX-40279 hemifumarate is a dual and potent inhibitor of FLT3 kinase and FGFR kinase. MAX-40279 hemifumarate has the potential for the research of acute myelogenous leukemia (AML) (extracted from patent WO2021180032).

MAX-40279 hemiadipate is a dual and potent inhibitor of FLT3 kinase and FGFR kinase. MAX-40279 hemiadipate has the potential for the research of acute myelogenous leukemia (AML) (extracted from patent WO2021180032).

MAX-40279 is a dual and potent inhibitor of FLT3 kinase and FGFR kinase. MAX-40279 has the potential for the research of acute myelogenous leukemia (AML) (extracted from patent WO2021180032).

FLT3/AXL inhibitor

YHJ1039 is a broad-spectrum kinase inhibitor, possesses excellent potencies against FLT3 mutants (FLT3 D835Y, IC50=0.41 nM) as well as FAK (IC50=7 nM).

TSN084 (TSN 084) is a unique small molecule multi-kinase inhibitor of drug-resistant mutations of c-Met, Trks, and Flt3, also inhibits other oncotargets including Axl, DDRs, and CDK8/19.

PCW-A1001 is a potent, selective inhibitor of FLT-3 (D835Y) mutant with IC50 of 764 nM, weakly inhibits WT FLT-3 with IC50 of 2.54 uM.

MBP-11901 is an orally active, multitarget tyrosine kinase inhibitor targeting FLT3, VEGFR2, PDGFRβ, and c-KIT, shows excellent inhibitory activity against HCC cell growth in vitro (HepG2, IC50=5.16 uM).

Danatinib is a potent and selective FLT3 inhibitor with IC50 of 3 nM, overcomes acquired resistance and shows effective inhibition against FLT3-ITD and/or FLT3-TKD mutations.

Quizartinib (AC220) is a second-generation FLT3 inhibitor for Flt3(ITD/WT) with IC50 of 1.1 nM/4.2 nM, 10-fold more selective for Flt3 than KIT, PDGFRα, PDGFRβ, RET, and CSF-1R. Phase 1/2.

KW 2449 is a multikinase inhibitor of FLT3, ABL, ABL-T315I, and Aurora kinase.

K03861 is a type II CDK2 inhibitor with Kd of 50 nM, 18.6 nM, 15.4 nM, and 9.7 nM for CDK2(WT), CDK2(C118L), CDK2(A144C), and CDK2(C118L/A144C), respectlvely.

G-749 is an inhibitor of Fms-like tyrosine receptor kinase 3 (FLT3) with IC50 values ranging from 2.1 to 38.1 nM for wild-type and mutant (constitutively active) FLT3s in Ba/F3 cells expressing recombinant receptors.

Crenolanib (CP-868596) is a potent and selective inhibitor of PDGFRα/β with Kd of 2.1 nM/3.2 nM, also potently inhibits FLT3, sensitive to D842V mutation not V561D mutation, >100-fold more selective for PDGFR than c-Kit, VEGFR-2, TIE-2, FGFR-2, EGFR, erbB

5'-Fluoroindirubinoxime (5’-FIO, compound 13), an Indirubin derivative, is a potent FLT3 inhibitor, with an IC50 of 15 nM.

FF-10101 (FF10101) is a potent, selective, and irreversible FLT3 inhibitor with IC50 of 0.14 nM (FLT3 Wt), covalent binds to the C695 residue of FLT3.FF-10101 potently inhibited the phosphorylation of FLT3-ITD than that of FLT3-ITD-C695S (IC50 values 2.4 nM and 79 nM, respectively).FF-10101 potently and selectively inhibits the growth of mutant FLT3-expressing leukemia cells in vitro (MV4-11 c ell, IC50=0.83 nM), potently inhibits kinase activities of wild-type FLT3 and FLT3-D835Y with IC50 values of 0.20 nM and 0.16 nM, respectively.FF-10101 demonstrated high kinase selectivity to wild-type FLT3 with >30-fold margins against the other kinases except for FMS and KIT with IC50 values of 0.94 nM and 2.0 nM, respectively.FF-10101 showed growth inhibitory effects on all tested types of FLT3-TKD mutation- and FLT3-ITD with D835Y, Y842C, Y842H, or F691L mutation-expressing 32D cells with GI50 values from 0.43 nM to 6.1 nM.FF-10101 (2, 5, and 10 mg/kg) demonstrated anti-leukemic effects in in vivo models, FF-10101 more potently inhibited the growth of tumors with FLT3-ITD-D835Y and FLT3-ITD-F691L than quizartinib.

K783-0308 is a potent and selective dual inhibitor of FLT3 and MNK2 with IC50 values of 680 and 406 nM, respectively. K783-0308 inhibits the growth of MOLM-13 (IC50=10.5 µM) and MV-4-11 (IC50=10.4 µM) cells. K783-0308 promotes acute myeloid leukemia (AML) cell apoptosis and cell cycle arrests in the G0/G1 phase.

FLT3-IN-12 is a potent, selective and orally active FLT3 kinase inhibitor with IC50s of 1.48 nM and 2.87 nM for FLT3-WT and FLT3-D835Y, respectively. FLT3-IN-12 possesses high selectivity over c-KIT (>1000-fold). FLT3-IN-12 has an excellent anti-AML (acute myeloid leukemia) activity (MV4-11, IC50 of 0.75 nM).

OTS447 is a potent FLT3 inhibitor with an IC50 of 21 nM (WO2012016082A1, compound 335).

HP1328 is a potent inhibitor of FLT3 receptor tyrosine kinase (FLT3/ITD mutation). HP1328 is a benzoimidazole scaffold-based compound. HP1328 significantly reduces the leukemia burden and prolongs the survival of mice with FLT3/ITD leukemia.

MAX-40279 hydrochloride is a dual and potent inhibitor of FLT3 kinase and FGFR kinase. MAX-40279 hydrochloride has the potential for the research of acute myelogenous leukemia (AML) (extracted from patent WO2021180032).

HP1142 is a potent and selective inhibitor of FLT3 receptor tyrosine kinase (FLT3/ITD mutation). HP1142 is a benzoimidazole scaffold-based compound. HP1142 has the potential for the research of FLT3/ITD leukemia.

FLT3-IN-10 (compound 7c) is a potent inhibitor of FMS-like tyrosine kinase 3 (FLT3). FLT3-IN-10 has the potential for the treatment of FLT3-mutated acute myeloid leukemia (AML).