L-(-)-α-Methyldopa hydrate is an alpha-adrenergic agonist (selective for α2-adrenergic receptors) psychoactive drug used as a sympatholytic or antihypertensive.

L 873724 is a potent and selective non-basic cathepsin K inhibitor with IC50 of 0.2 nM, shows no significant potency against Cat B, L, and S (IC50= 5239, 264, and 178 nM).

KZR-504 is a highly selective and orally active inhibitor of immunoproteasome low molecular mass polypeptide 2 (LMP2), with IC50s of 51 nM, 4.274 μM for LMP2 and LMP7, respectively.

Kynurenic acid, a natural metabolite of tryptophan via the kynurenine pathway, is a broad-spectrum excitatory amino acid antagonist.

KY-04045 is a novel PAK4 inhibitor with IC50 of 8.7 uM, a basic building block in designing novel imidazo[4,5-b]pyridine-based PAK4 inhibitors..

KY-02327 is an orally active, small molecule inhibitor of the Dishevelled (Dvl)-CXXC5 interaction with IC50 of 3.1 uM, a metabolically stabilized KY-02061 analog.

KY-02061 is a small-molecule inhibitor of Dishevelled-CXXC5 interaction with IC50 of 24 uM in vitro binding assay.

KX2-361 (KX 02) is a potent, dual Src signaling/tubulin polymerization inhibitor that are under clinical evaluation..

KuWal151 is a potent, selective cdc2-like kinase (CLK) inhibitor with IC50 of 88/510/28 nM for CLK1/2/4, respectively.

KU14R is a new I(3)-R antagonist, which selectively blocks the insulin secretory response to imidazolines.

KU-0063794 is a potent and highly specific mTOR inhibitor for both mTORC1 and mTORC2 with IC50 ~10 nM.

KT-5720 is a highly specific PKA (cAMP-dependent protein kinase) inhibitor with Ki of 60 nM displays little to no activity for MLCK, cGPK, and PKC (Ki>2 uM).

KT-195 is a potent and selective inhibitor of serine hydrolase ABHD6 (α/β-hydrolase domain-containing protein 6) with IC50 of 10 nM.

KT-172 is a potent, selective inhibitor of DAGLβ with IC50 of 60 nM.

KSC-34 (PDIA1 inhibitor KSC-34) is a potent, selective protein disulfide isomerase A1 (PDIA1) inhibitor, 30-fold selectivity for the A-site over the A' site.

KS-99 (KS99) is a novel dual inhibitor of BTK and tubulin polymerization.

KRN2 is a selective inhibitor of nuclear factor of activated T cells (NFAT5), with an IC50 of 0.1 μM.

KRAS-G12C inhibitor 13 is a potnt, irreversible, covalent and in vivo-active inhibitor of KRAS-G12C, suppresses ERK phosphorylation with IC50 of 70 nM in H358 cell assays.

KRAS4b-PDEδ stablizer C19 is a small molecule that binds and stablizes the KRAS4b-PDEδ complex, decreases the viability and proliferation of colorectal cancer cells.

K-Ras(G12C) inhibitor 6 is an allosteric, and selective inhibitor of oncogenic K-Ras(G12C).

KRAS inhibitor Cmpd2 is a small-molecule compound that blocks biochemical and cellular functions of KRASG12V with IC50 of 0.8 uM in vitro.

KRAS inhibitor C6ME is a small-molecule compound that blocks biochemical and cellular functions of KRASG12V in vitro..

KRAS inhibitor 11 is a first-in-class, high-affinity, noncovalent allosteric KRAS inhibitor, disrupts KRAS-Raf interaction with Kd of 1.2 uM.

KRAS G12C inhibitor 11 is a potent, selective, covalent and irreversible inhibitor of KRAS G12C, inhibits KRAS dependent ERK-phosphorylation in the H358 cell with IC50 of 5 nM.

KR-62436 (KR62436) is a potent, selective DPP4 inhibitor with IC50 of 0.78, 0.49, 0.14 uM for rat plasma, porcine kidney, human DPP4 (Caco-2), respectively.

KR-33028 is a potent, highly selective NHE1 inhibitor with IC50 of 2.59 uM.

KR-32570 is a potent sodium hydrogen exchanger NHE1 inhibitor with IC50 of 50 nM.

KPT-185 is an orally bioavailable selective inhibitor of CRM1 amd displayes potent antiproliferative properties at submicromolar concentrations,induced apoptosis (average 5-fold increase), cell-cycle arrest, and myeloid differentiation in AML cell lines a

KP372-1 is a specific Akt inhibitor that blocks proliferation and induces apoptosis of thyroid cancer cells with an IC50 value of 30-60 nM in vitro.

KP1019 (FFC14A) is just the second ruthenium-based anticancer agent after NAMI-A which was developed to the stage of clinical trials.